400245152 has 24 divisors (see below), whose sum is σ = 789699456. Its totient is φ = 199686592.

The previous prime is 400245143. The next prime is 400245179. The reversal of 400245152 is 251542004.

It is a happy number.

400245152 is nontrivially palindromic in base 15.

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, 1553 + ... + 28335.

It is an arithmetic number, because the mean of its divisors is an integer number (32904144).

Almost surely, 2^400245152 is an apocalyptic number.

It is an amenable number.

400245152 is a deficient number, since it is larger than the sum of its proper divisors (389454304).

400245152 is a wasteful number, since it uses less digits than its factorization.

400245152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27260 (or 27252 counting only the distinct ones).

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

The square root of 400245152 is about 20006.1278612329. The cubic root of 400245152 is about 736.9567936024.

Adding to 400245152 its reverse (251542004), we get a palindrome (651787156).

The spelling of 400245152 in words is "four hundred million, two hundred forty-five thousand, one hundred fifty-two".