400827636 has 48 divisors (see below), whose sum is σ = 1133657280. Its totient is φ = 121462560.

The previous prime is 400827607. The next prime is 400827641. The reversal of 400827636 is 636728004.

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

It is a self number, because there is not a number n which added to its sum of digits gives 400827636.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 167511 + ... + 169886.

It is an arithmetic number, because the mean of its divisors is an integer number (23617860).

Almost surely, 2^400827636 is an apocalyptic number.

It is an amenable number.

400827636 is an abundant number, since it is smaller than the sum of its proper divisors (732829644).

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

400827636 is a wasteful number, since it uses less digits than its factorization.

400827636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337421 (or 337413 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 400827636 is about 20020.6802082247. The cubic root of 400827636 is about 737.3141224942.

The spelling of 400827636 in words is "four hundred million, eight hundred twenty-seven thousand, six hundred thirty-six".