400133064 has 32 divisors (see below), whose sum is σ = 1001485440. Its totient is φ = 133224000.

The previous prime is 400133057. The next prime is 400133077. The reversal of 400133064 is 460331004.

It is a self number, because there is not a number n which added to its sum of digits gives 400133064.

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, 12714 + ... + 31014.

It is an arithmetic number, because the mean of its divisors is an integer number (31296420).

Almost surely, 2^400133064 is an apocalyptic number.

It is an amenable number.

400133064 is an abundant number, since it is smaller than the sum of its proper divisors (601352376).

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

400133064 is a wasteful number, since it uses less digits than its factorization.

400133064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19221 (or 19217 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 400133064 is about 20003.3263233893. The cubic root of 400133064 is about 736.8879926646.

Adding to 400133064 its reverse (460331004), we get a palindrome (860464068).

The spelling of 400133064 in words is "four hundred million, one hundred thirty-three thousand, sixty-four".