100520812 has 12 divisors (see below), whose sum is σ = 201041680. Its totient is φ = 43080336.

The previous prime is 100520803. The next prime is 100520831. The reversal of 100520812 is 218025001.

100520812 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 100520812.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1794987 + ... + 1795042.

Almost surely, 2^100520812 is an apocalyptic number.

It is an amenable number.

100520812 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

100520812 is a wasteful number, since it uses less digits than its factorization.

100520812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3590040 (or 3590038 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 19.

The square root of 100520812 is about 10026.0067823636. The cubic root of 100520812 is about 464.9632868845.

Adding to 100520812 its reverse (218025001), we get a palindrome (318545813).

The spelling of 100520812 in words is "one hundred million, five hundred twenty thousand, eight hundred twelve".