105998290 has 16 divisors (see below), whose sum is σ = 190941912. Its totient is φ = 42367104.

The previous prime is 105998273. The next prime is 105998309. The reversal of 105998290 is 92899501.

It can be written as a sum of positive squares in 4 ways, for example, as 40436881 + 65561409 = 6359^2 + 8097^2 .

It is a super-2 number, since 2×105998290² = 22471274965848200, which contains 22 as substring.

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, 13372 + ... + 19768.

Almost surely, 2^105998290 is an apocalyptic number.

105998290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

105998290 is a deficient number, since it is larger than the sum of its proper divisors (84943622).

105998290 is a wasteful number, since it uses less digits than its factorization.

105998290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8061.

The product of its (nonzero) digits is 58320, while the sum is 43.

The square root of 105998290 is about 10295.5470957108. The cubic root of 105998290 is about 473.2598042013.

The spelling of 105998290 in words is "one hundred five million, nine hundred ninety-eight thousand, two hundred ninety".