102539620 has 24 divisors (see below), whose sum is σ = 218369088. Its totient is φ = 40437600.

The previous prime is 102539603. The next prime is 102539623. The reversal of 102539620 is 26935201.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (102539623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34686 + ... + 37525.

It is an arithmetic number, because the mean of its divisors is an integer number (9098712).

Almost surely, 2^102539620 is an apocalyptic number.

102539620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102539620 is an abundant number, since it is smaller than the sum of its proper divisors (115829468).

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

102539620 is a wasteful number, since it uses less digits than its factorization.

102539620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72291 (or 72289 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 102539620 is about 10126.1848689425. The cubic root of 102539620 is about 468.0553724630.

The spelling of 102539620 in words is "one hundred two million, five hundred thirty-nine thousand, six hundred twenty".