812404548 has 36 divisors (see below), whose sum is σ = 2054480428. Its totient is φ = 270682560.

The previous prime is 812404531. The next prime is 812404553. The reversal of 812404548 is 845404218.

It can be written as a sum of positive squares in 2 ways, for example, as 516289284 + 296115264 = 22722^2 + 17208^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×812404548² = 1320002299222168608, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 124290 + ... + 130662.

Almost surely, 2^812404548 is an apocalyptic number.

It is an amenable number.

812404548 is an abundant number, since it is smaller than the sum of its proper divisors (1242075880).

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

812404548 is a wasteful number, since it uses less digits than its factorization.

812404548 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9924 (or 9919 counting only the distinct ones).

The product of its (nonzero) digits is 40960, while the sum is 36.

The square root of 812404548 is about 28502.7112394593. The cubic root of 812404548 is about 933.0912466805.

The spelling of 812404548 in words is "eight hundred twelve million, four hundred four thousand, five hundred forty-eight".