400235304 has 64 divisors (see below), whose sum is σ = 1203724800. Its totient is φ = 108333504.

The previous prime is 400235299. The next prime is 400235309. The reversal of 400235304 is 403532004.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (400235299) and next prime (400235309).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (400235309) 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, 59502 + ... + 65885.

It is an arithmetic number, because the mean of its divisors is an integer number (18808200).

Almost surely, 2^400235304 is an apocalyptic number.

It is an amenable number.

400235304 is an abundant number, since it is smaller than the sum of its proper divisors (803489496).

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

400235304 is a wasteful number, since it uses less digits than its factorization.

400235304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125422 (or 125418 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 21.

The square root of 400235304 is about 20005.8817351298. The cubic root of 400235304 is about 736.9507492984.

Adding to 400235304 its reverse (403532004), we get a palindrome (803767308).

The spelling of 400235304 in words is "four hundred million, two hundred thirty-five thousand, three hundred four".