102557830 has 16 divisors (see below), whose sum is σ = 184769424. Its totient is φ = 40986400.

The previous prime is 102557813. The next prime is 102557837. The reversal of 102557830 is 38755201.

It is a junction number, because it is equal to n+sod(n) for n = 102557792 and 102557801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102557837) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9069 + ... + 16951.

It is an arithmetic number, because the mean of its divisors is an integer number (11548089).

Almost surely, 2^102557830 is an apocalyptic number.

102557830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102557830 is a deficient number, since it is larger than the sum of its proper divisors (82211594).

102557830 is a wasteful number, since it uses less digits than its factorization.

102557830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9191.

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 102557830 is about 10127.0839830624. The cubic root of 102557830 is about 468.0830781239.

The spelling of 102557830 in words is "one hundred two million, five hundred fifty-seven thousand, eight hundred thirty".