102302990 has 16 divisors (see below), whose sum is σ = 186045552. Its totient is φ = 40498944.

The previous prime is 102302989. The next prime is 102303017. The reversal of 102302990 is 99203201.

It is a Curzon number.

It is a congruent number.

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, 51764 + ... + 53703.

It is an arithmetic number, because the mean of its divisors is an integer number (11627847).

Almost surely, 2^102302990 is an apocalyptic number.

102302990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102302990 is a deficient number, since it is larger than the sum of its proper divisors (83742562).

102302990 is a wasteful number, since it uses less digits than its factorization.

102302990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105571.

The product of its (nonzero) digits is 972, while the sum is 26.

The square root of 102302990 is about 10114.4940555620. The cubic root of 102302990 is about 467.6950523932.

The spelling of 102302990 in words is "one hundred two million, three hundred two thousand, nine hundred ninety".