815426120 has 16 divisors (see below), whose sum is σ = 1834708860. Its totient is φ = 326170432.

The previous prime is 815426119. The next prime is 815426141. The reversal of 815426120 is 21624518.

It can be written as a sum of positive squares in 2 ways, for example, as 767179204 + 48246916 = 27698^2 + 6946^2 .

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, 10192787 + ... + 10192866.

Almost surely, 2^815426120 is an apocalyptic number.

It is an amenable number.

815426120 is an abundant number, since it is smaller than the sum of its proper divisors (1019282740).

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

815426120 is a wasteful number, since it uses less digits than its factorization.

815426120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20385664 (or 20385660 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 815426120 is about 28555.6670382605. The cubic root of 815426120 is about 934.2466292624.

The spelling of 815426120 in words is "eight hundred fifteen million, four hundred twenty-six thousand, one hundred twenty".