400052330 has 64 divisors (see below), whose sum is σ = 780671520. Its totient is φ = 147062784.

The previous prime is 400052327. The next prime is 400052339. The reversal of 400052330 is 33250004.

It can be written as a sum of positive squares in 16 ways, for example, as 17732521 + 382319809 = 4211^2 + 19553^2 .

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a junction number, because it is equal to n+sod(n) for n = 400052299 and 400052308.

It is not an unprimeable number, because it can be changed into a prime (400052339) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2072714 + ... + 2072906.

Almost surely, 2^400052330 is an apocalyptic number.

400052330 is a deficient number, since it is larger than the sum of its proper divisors (380619190).

400052330 is a wasteful number, since it uses less digits than its factorization.

400052330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443.

The product of its (nonzero) digits is 360, while the sum is 17.

The square root of 400052330 is about 20001.3082072148. The cubic root of 400052330 is about 736.8384292217.

The spelling of 400052330 in words is "four hundred million, fifty-two thousand, three hundred thirty".