108402290 has 32 divisors (see below), whose sum is σ = 203906160. Its totient is φ = 41440000.

The previous prime is 108402263. The next prime is 108402311. The reversal of 108402290 is 92204801.

It can be written as a sum of positive squares in 8 ways, for example, as 73839649 + 34562641 = 8593^2 + 5879^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27440 + ... + 31140.

Almost surely, 2^108402290 is an apocalyptic number.

108402290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

108402290 is a deficient number, since it is larger than the sum of its proper divisors (95503870).

108402290 is a wasteful number, since it uses less digits than its factorization.

108402290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3838.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 108402290 is about 10411.6420414841. The cubic root of 108402290 is about 476.8108751301.

The spelling of 108402290 in words is "one hundred eight million, four hundred two thousand, two hundred ninety".