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102228030 = 23251378291
BaseRepresentation
bin1100001011111…
…10000000111110
321010100201111100
412011332000332
5202132244110
614051033530
72350631622
oct605760076
9233321440
10102228030
1152783483
122a29b8a6
1318243978
14d811182
158e94bc0
hex617e03e

102228030 has 48 divisors (see below), whose sum is σ = 267765264. Its totient is φ = 27058560.

The previous prime is 102228019. The next prime is 102228041. The reversal of 102228030 is 30822201.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (102228019) and next prime (102228041).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 102227994 and 102228012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8185 + ... + 16475.

It is an arithmetic number, because the mean of its divisors is an integer number (5578443).

Almost surely, 2102228030 is an apocalyptic number.

102228030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 102228030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (133882632).

102228030 is an abundant number, since it is smaller than the sum of its proper divisors (165537234).

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

102228030 is a wasteful number, since it uses less digits than its factorization.

102228030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8441 (or 8438 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 102228030 is about 10110.7878031338. The cubic root of 102228030 is about 467.5807937994.

The spelling of 102228030 in words is "one hundred two million, two hundred twenty-eight thousand, thirty".

Divisors: 1 2 3 5 6 9 10 15 18 30 45 90 137 274 411 685 822 1233 1370 2055 2466 4110 6165 8291 12330 16582 24873 41455 49746 74619 82910 124365 149238 248730 373095 746190 1135867 2271734 3407601 5679335 6815202 10222803 11358670 17038005 20445606 34076010 51114015 102228030