102890790 has 32 divisors (see below), whose sum is σ = 274376160. Its totient is φ = 27437472.

The previous prime is 102890779. The next prime is 102890797. The reversal of 102890790 is 97098201.

It is a happy number.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102890797) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 190269 + ... + 190808.

It is an arithmetic number, because the mean of its divisors is an integer number (8574255).

Almost surely, 2^102890790 is an apocalyptic number.

102890790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102890790 is an abundant number, since it is smaller than the sum of its proper divisors (171485370).

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

102890790 is a wasteful number, since it uses less digits than its factorization.

102890790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381093 (or 381087 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 36.

The square root of 102890790 is about 10143.5097476169. The cubic root of 102890790 is about 468.5890839659.

The spelling of 102890790 in words is "one hundred two million, eight hundred ninety thousand, seven hundred ninety".