105087812 has 24 divisors (see below), whose sum is σ = 195869016. Its totient is φ = 49161728.

The previous prime is 105087781. The next prime is 105087821. The reversal of 105087812 is 218780501.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 38763076 + 66324736 = 6226^2 + 8144^2 .

It is a super-2 number, since 2×105087812² = 22086896461894688, 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, 7298 + ... + 16230.

It is an arithmetic number, because the mean of its divisors is an integer number (8161209).

Almost surely, 2^105087812 is an apocalyptic number.

It is an amenable number.

105087812 is a deficient number, since it is larger than the sum of its proper divisors (90781204).

105087812 is a wasteful number, since it uses less digits than its factorization.

105087812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9127 (or 9125 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 32.

The square root of 105087812 is about 10251.2346573474. The cubic root of 105087812 is about 471.9008757180.

The spelling of 105087812 in words is "one hundred five million, eighty-seven thousand, eight hundred twelve".