102990556 has 24 divisors (see below), whose sum is σ = 196995456. Its totient is φ = 46901760.

The previous prime is 102990553. The next prime is 102990557. The reversal of 102990556 is 655099201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102990553) 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, 22321 + ... + 26536.

It is an arithmetic number, because the mean of its divisors is an integer number (8208144).

Almost surely, 2^102990556 is an apocalyptic number.

It is an amenable number.

102990556 is a deficient number, since it is larger than the sum of its proper divisors (94004900).

102990556 is a wasteful number, since it uses less digits than its factorization.

102990556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48909 (or 48907 counting only the distinct ones).

The product of its (nonzero) digits is 24300, while the sum is 37.

The square root of 102990556 is about 10148.4262819415. The cubic root of 102990556 is about 468.7404877240.

The spelling of 102990556 in words is "one hundred two million, nine hundred ninety thousand, five hundred fifty-six".