400844268 has 48 divisors (see below), whose sum is σ = 1133704320. Its totient is φ = 121467600.

The previous prime is 400844243. The next prime is 400844329. The reversal of 400844268 is 862448004.

It is a super-2 number, since 2×400844268² = 321352254376911648, 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 (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 167518 + ... + 169893.

It is an arithmetic number, because the mean of its divisors is an integer number (23618840).

Almost surely, 2^400844268 is an apocalyptic number.

It is an amenable number.

400844268 is an abundant number, since it is smaller than the sum of its proper divisors (732860052).

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

400844268 is a wasteful number, since it uses less digits than its factorization.

400844268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337435 (or 337427 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 36.

The square root of 400844268 is about 20021.0955744185. The cubic root of 400844268 is about 737.3243204261.

The spelling of 400844268 in words is "four hundred million, eight hundred forty-four thousand, two hundred sixty-eight".