400241504 has 24 divisors (see below), whose sum is σ = 848589840. Its totient is φ = 184726656.

The previous prime is 400241503. The next prime is 400241509. The reversal of 400241504 is 405142004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400241503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 480644 + ... + 481475.

It is an arithmetic number, because the mean of its divisors is an integer number (35357910).

Almost surely, 2^400241504 is an apocalyptic number.

It is an amenable number.

400241504 is an abundant number, since it is smaller than the sum of its proper divisors (448348336).

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

400241504 is a wasteful number, since it uses less digits than its factorization.

400241504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 962142 (or 962134 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 400241504 is about 20006.0366889597. The cubic root of 400241504 is about 736.9545546191.

Adding to 400241504 its reverse (405142004), we get a palindrome (805383508).

The spelling of 400241504 in words is "four hundred million, two hundred forty-one thousand, five hundred four".