400133004 has 48 divisors (see below), whose sum is σ = 944320608. Its totient is φ = 131862528.

The previous prime is 400132973. The next prime is 400133009. The reversal of 400133004 is 400331004.

It is not an unprimeable number, because it can be changed into a prime (400133009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 455814 + ... + 456690.

It is an arithmetic number, because the mean of its divisors is an integer number (19673346).

Almost surely, 2^400133004 is an apocalyptic number.

It is an amenable number.

400133004 is an abundant number, since it is smaller than the sum of its proper divisors (544187604).

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

400133004 is a wasteful number, since it uses less digits than its factorization.

400133004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1274 (or 1272 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 400133004 is about 20003.3248236387. The cubic root of 400133004 is about 736.8879558325.

Adding to 400133004 its reverse (400331004), we get a palindrome (800464008).

The spelling of 400133004 in words is "four hundred million, one hundred thirty-three thousand, four".