400452228 has 48 divisors (see below), whose sum is σ = 1132595520. Its totient is φ = 121348800.

The previous prime is 400452223. The next prime is 400452229. The reversal of 400452228 is 822254004.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (400452223) 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, 167353 + ... + 169728.

It is an arithmetic number, because the mean of its divisors is an integer number (23595740).

Almost surely, 2^400452228 is an apocalyptic number.

It is an amenable number.

400452228 is an abundant number, since it is smaller than the sum of its proper divisors (732143292).

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

400452228 is a wasteful number, since it uses less digits than its factorization.

400452228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337105 (or 337097 counting only the distinct ones).

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

The square root of 400452228 is about 20011.3025063338. The cubic root of 400452228 is about 737.0838655179.

The spelling of 400452228 in words is "four hundred million, four hundred fifty-two thousand, two hundred twenty-eight".