400454272 has 32 divisors (see below), whose sum is σ = 825297300. Its totient is φ = 193320960.

The previous prime is 400454269. The next prime is 400454281. The reversal of 400454272 is 272454004.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 394578496 + 5875776 = 19864^2 + 2424^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is a self number, because there is not a number n which added to its sum of digits gives 400454272.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50229 + ... + 57652.

Almost surely, 2^400454272 is an apocalyptic number.

It is an amenable number.

400454272 is an abundant number, since it is smaller than the sum of its proper divisors (424843028).

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

400454272 is a wasteful number, since it uses less digits than its factorization.

400454272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107924 (or 107912 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 28.

The square root of 400454272 is about 20011.3535774070. The cubic root of 400454272 is about 737.0851195975.

The spelling of 400454272 in words is "four hundred million, four hundred fifty-four thousand, two hundred seventy-two".