400133952 has 56 divisors (see below), whose sum is σ = 1176324800. Its totient is φ = 133377408.

The previous prime is 400133927. The next prime is 400133999. The reversal of 400133952 is 259331004.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114052 + ... + 117507.

It is an arithmetic number, because the mean of its divisors is an integer number (21005800).

Almost surely, 2^400133952 is an apocalyptic number.

It is an amenable number.

400133952 is an abundant number, since it is smaller than the sum of its proper divisors (776190848).

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

400133952 is a wasteful number, since it uses less digits than its factorization.

400133952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231580 (or 231564 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 400133952 is about 20003.3485196854. The cubic root of 400133952 is about 736.8885377800. Note that the first 3 decimals are identical.

Adding to 400133952 its reverse (259331004), we get a palindrome (659464956).

The spelling of 400133952 in words is "four hundred million, one hundred thirty-three thousand, nine hundred fifty-two".