400485024 has 36 divisors (see below), whose sum is σ = 1138880106. Its totient is φ = 133494912.

The previous prime is 400485023. The next prime is 400485053. The reversal of 400485024 is 420584004.

It can be written as a sum of positive squares in only one way, i.e., 321843600 + 78641424 = 17940^2 + 8868^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (400485023) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 694999 + ... + 695574.

Almost surely, 2^400485024 is an apocalyptic number.

It is an amenable number.

400485024 is an abundant number, since it is smaller than the sum of its proper divisors (738395082).

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

400485024 is a wasteful number, since it uses less digits than its factorization.

400485024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1390589 (or 1390578 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 27.

The square root of 400485024 is about 20012.1219264725. The cubic root of 400485024 is about 737.1039867216.

The spelling of 400485024 in words is "four hundred million, four hundred eighty-five thousand, twenty-four".