400130232 has 32 divisors (see below), whose sum is σ = 1016728080. Its totient is φ = 131189760.

The previous prime is 400130221. The next prime is 400130249. The reversal of 400130232 is 232031004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 135193 + ... + 138120.

Almost surely, 2^400130232 is an apocalyptic number.

It is an amenable number.

400130232 is an abundant number, since it is smaller than the sum of its proper divisors (616597848).

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

400130232 is a wasteful number, since it uses less digits than its factorization.

400130232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273383 (or 273379 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 400130232 is about 20003.2555350373. The cubic root of 400130232 is about 736.8862541832.

Adding to 400130232 its reverse (232031004), we get a palindrome (632161236).

The spelling of 400130232 in words is "four hundred million, one hundred thirty thousand, two hundred thirty-two".