102857930 has 32 divisors (see below), whose sum is σ = 216760320. Its totient is φ = 34404480.

The previous prime is 102857929. The next prime is 102857957. The reversal of 102857930 is 39758201.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15050 + ... + 20789.

It is an arithmetic number, because the mean of its divisors is an integer number (6773760).

Almost surely, 2^102857930 is an apocalyptic number.

102857930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102857930 is an abundant number, since it is smaller than the sum of its proper divisors (113902390).

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

102857930 is a wasteful number, since it uses less digits than its factorization.

102857930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35894.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 102857930 is about 10141.8898633342. The cubic root of 102857930 is about 468.5391945741.

The spelling of 102857930 in words is "one hundred two million, eight hundred fifty-seven thousand, nine hundred thirty".