400425152 has 28 divisors (see below), whose sum is σ = 836416920. Its totient is φ = 189674496.

The previous prime is 400425149. The next prime is 400425173. The reversal of 400425152 is 251524004.

It is a happy number.

It is a super-3 number, since 3×400425152³ (a number of 27 digits) contains 333 as substring.

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, 163433 + ... + 165864.

Almost surely, 2^400425152 is an apocalyptic number.

It is an amenable number.

400425152 is an abundant number, since it is smaller than the sum of its proper divisors (435991768).

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

400425152 is a wasteful number, since it uses less digits than its factorization.

400425152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329328 (or 329318 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 400425152 is about 20010.6259772152. The cubic root of 400425152 is about 737.0672528559.

Adding to 400425152 its reverse (251524004), we get a palindrome (651949156).

The spelling of 400425152 in words is "four hundred million, four hundred twenty-five thousand, one hundred fifty-two".