400324012 has 24 divisors (see below), whose sum is σ = 764854272. Its totient is φ = 181822800.

The previous prime is 400323991. The next prime is 400324019. The reversal of 400324012 is 210423004.

It is a super-2 number, since 2×400324012² = 320518629167552288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (400324019) 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, 70437 + ... + 75907.

It is an arithmetic number, because the mean of its divisors is an integer number (31868928).

Almost surely, 2^400324012 is an apocalyptic number.

It is an amenable number.

400324012 is a deficient number, since it is larger than the sum of its proper divisors (364530260).

400324012 is a wasteful number, since it uses less digits than its factorization.

400324012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7149 (or 7147 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 400324012 is about 20008.0986602925. The cubic root of 400324012 is about 737.0051911041.

Adding to 400324012 its reverse (210423004), we get a palindrome (610747016).

It can be divided in two parts, 40032 and 4012, that added together give a palindrome (44044).

The spelling of 400324012 in words is "four hundred million, three hundred twenty-four thousand, twelve".