105638290 has 32 divisors (see below), whose sum is σ = 200704320. Its totient is φ = 39921984.

The previous prime is 105638279. The next prime is 105638327. The reversal of 105638290 is 92836501.

It is a super-2 number, since 2×105638290² = 22318896628248200, which contains 22 as substring.

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, 116017 + ... + 116923.

It is an arithmetic number, because the mean of its divisors is an integer number (6272010).

Almost surely, 2^105638290 is an apocalyptic number.

105638290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

105638290 is a deficient number, since it is larger than the sum of its proper divisors (95066030).

105638290 is a wasteful number, since it uses less digits than its factorization.

105638290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1546.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 105638290 is about 10278.0489393659. The cubic root of 105638290 is about 472.7234220482.

The spelling of 105638290 in words is "one hundred five million, six hundred thirty-eight thousand, two hundred ninety".