400432052 has 12 divisors (see below), whose sum is σ = 701307936. Its totient is φ = 200058360.

The previous prime is 400432037. The next prime is 400432063. The reversal of 400432052 is 250234004.

It is a congruent number.

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, 33608 + ... + 43935.

It is an arithmetic number, because the mean of its divisors is an integer number (58442328).

Almost surely, 2^400432052 is an apocalyptic number.

It is an amenable number.

400432052 is a deficient number, since it is larger than the sum of its proper divisors (300875884).

400432052 is a wasteful number, since it uses less digits than its factorization.

400432052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78838 (or 78836 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 400432052 is about 20010.7983848721. The cubic root of 400432052 is about 737.0714864684.

Adding to 400432052 its reverse (250234004), we get a palindrome (650666056).

The spelling of 400432052 in words is "four hundred million, four hundred thirty-two thousand, fifty-two".