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102303020 = 22543472531
BaseRepresentation
bin1100001100100…
…00010100101100
321010111112100202
412012100110230
5202142144040
614052413032
72351363351
oct606202454
9233445322
10102303020
1152824856
122a317178
131826bb41
14d830628
158eac015
hex619052c

102303020 has 48 divisors (see below), whose sum is σ = 224598528. Its totient is φ = 39103680.

The previous prime is 102303017. The next prime is 102303023. The reversal of 102303020 is 20303201.

It is an interprime number because it is at equal distance from previous prime (102303017) and next prime (102303023).

It is a super-2 number, since 2×1023030202 = 20931815802240800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 102302992 and 102303010.

It is not an unprimeable number, because it can be changed into a prime (102303023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39155 + ... + 41685.

It is an arithmetic number, because the mean of its divisors is an integer number (4679136).

Almost surely, 2102303020 is an apocalyptic number.

102303020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 102303020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112299264).

102303020 is an abundant number, since it is smaller than the sum of its proper divisors (122295508).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

102303020 is a wasteful number, since it uses less digits than its factorization.

102303020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2630 (or 2628 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 11.

The square root of 102303020 is about 10114.4955385822. The cubic root of 102303020 is about 467.6950981099.

Adding to 102303020 its reverse (20303201), we get a palindrome (122606221).

The spelling of 102303020 in words is "one hundred two million, three hundred three thousand, twenty".

Divisors: 1 2 4 5 10 20 43 47 86 94 172 188 215 235 430 470 860 940 2021 2531 4042 5062 8084 10105 10124 12655 20210 25310 40420 50620 108833 118957 217666 237914 435332 475828 544165 594785 1088330 1189570 2176660 2379140 5115151 10230302 20460604 25575755 51151510 102303020