400224528 has 60 divisors (see below), whose sum is σ = 1221902448. Its totient is φ = 121279680.

The previous prime is 400224511. The next prime is 400224529. The reversal of 400224528 is 825422004.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (400224529) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 124750 + ... + 127917.

Almost surely, 2^400224528 is an apocalyptic number.

400224528 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

400224528 is an abundant number, since it is smaller than the sum of its proper divisors (821677920).

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

400224528 is a wasteful number, since it uses less digits than its factorization.

400224528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252692 (or 252683 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 27.

The square root of 400224528 is about 20005.6124125206. The cubic root of 400224528 is about 736.9441353121.

The spelling of 400224528 in words is "four hundred million, two hundred twenty-four thousand, five hundred twenty-eight".