102538930 has 16 divisors (see below), whose sum is σ = 198768024. Its totient is φ = 37860480.

The previous prime is 102538927. The next prime is 102538949. The reversal of 102538930 is 39835201.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 45279441 + 57259489 = 6729^2 + 7567^2 .

It is a junction number, because it is equal to n+sod(n) for n = 102538892 and 102538901.

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, 394251 + ... + 394510.

Almost surely, 2^102538930 is an apocalyptic number.

102538930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102538930 is a deficient number, since it is larger than the sum of its proper divisors (96229094).

102538930 is a wasteful number, since it uses less digits than its factorization.

102538930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 788781.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 102538930 is about 10126.1507987981. The cubic root of 102538930 is about 468.0543225959.

The spelling of 102538930 in words is "one hundred two million, five hundred thirty-eight thousand, nine hundred thirty".