461028636 has 18 divisors (see below), whose sum is σ = 1165378032. Its totient is φ = 153676200.

The previous prime is 461028613. The next prime is 461028643. The reversal of 461028636 is 636820164.

461028636 is a `hidden beast` number, since 4 + 6 + 10 + 2 + 8 + 636 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 12806351 = 461028636 / (4 + 6 + 1 + 0 + 2 + 8 + 6 + 3 + 6).

It is a self number, because there is not a number n which added to its sum of digits gives 461028636.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6403140 + ... + 6403211.

It is an arithmetic number, because the mean of its divisors is an integer number (64743224).

Almost surely, 2^461028636 is an apocalyptic number.

It is an amenable number.

461028636 is an abundant number, since it is smaller than the sum of its proper divisors (704349396).

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

461028636 is a wasteful number, since it uses less digits than its factorization.

461028636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12806361 (or 12806356 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 461028636 is about 21471.5773989709. The cubic root of 461028636 is about 772.5192328765.

The spelling of 461028636 in words is "four hundred sixty-one million, twenty-eight thousand, six hundred thirty-six".