105156090 has 64 divisors (see below), whose sum is σ = 301996800. Its totient is φ = 25883712.

The previous prime is 105156083. The next prime is 105156091. The reversal of 105156090 is 90651501.

105156090 is a `hidden beast` number, since 1 + 0 + 51 + 5 + 609 + 0 = 666.

It is a super-2 number, since 2×105156090² = 22115606528176200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (105156091) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11470 + ... + 18489.

It is an arithmetic number, because the mean of its divisors is an integer number (4718700).

Almost surely, 2^105156090 is an apocalyptic number.

105156090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

105156090 is an abundant number, since it is smaller than the sum of its proper divisors (196840710).

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

105156090 is a wasteful number, since it uses less digits than its factorization.

105156090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29988 (or 29982 counting only the distinct ones).

The product of its (nonzero) digits is 1350, while the sum is 27.

The square root of 105156090 is about 10254.5643495957. The cubic root of 105156090 is about 472.0030552565.

The spelling of 105156090 in words is "one hundred five million, one hundred fifty-six thousand, ninety".