406872636 has 24 divisors (see below), whose sum is σ = 958245120. Its totient is φ = 134356272.

The previous prime is 406872619. The next prime is 406872637. The reversal of 406872636 is 636278604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406872637) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 157156 + ... + 159723.

It is an arithmetic number, because the mean of its divisors is an integer number (39926880).

Almost surely, 2^406872636 is an apocalyptic number.

It is an amenable number.

406872636 is an abundant number, since it is smaller than the sum of its proper divisors (551372484).

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

406872636 is a wasteful number, since it uses less digits than its factorization.

406872636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316993 (or 316991 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 42.

The square root of 406872636 is about 20171.0841552952. The cubic root of 406872636 is about 741.0021945695.

The spelling of 406872636 in words is "four hundred six million, eight hundred seventy-two thousand, six hundred thirty-six".