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102225020 = 2256183791
BaseRepresentation
bin1100001011111…
…01010001111100
321010100120100212
412011331101330
5202132200040
614051011552
72350620062
oct605752174
9233316325
10102225020
1152781197
122a299bb8
13182424a1
14d810032
158e93d65
hex617d47c

102225020 has 24 divisors (see below), whose sum is σ = 218194368. Its totient is φ = 40219200.

The previous prime is 102225007. The next prime is 102225031. The reversal of 102225020 is 20522201.

It is a junction number, because it is equal to n+sod(n) for n = 102224986 and 102225004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40676 + ... + 43115.

It is an arithmetic number, because the mean of its divisors is an integer number (9091432).

Almost surely, 2102225020 is an apocalyptic number.

102225020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102225020 is an abundant number, since it is smaller than the sum of its proper divisors (115969348).

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

102225020 is a wasteful number, since it uses less digits than its factorization.

102225020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83861 (or 83859 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 102225020 is about 10110.6389511247. The cubic root of 102225020 is about 467.5762046080.

Adding to 102225020 its reverse (20522201), we get a palindrome (122747221).

The spelling of 102225020 in words is "one hundred two million, two hundred twenty-five thousand, twenty".

Divisors: 1 2 4 5 10 20 61 122 244 305 610 1220 83791 167582 335164 418955 837910 1675820 5111251 10222502 20445004 25556255 51112510 102225020