400314240 has 96 divisors (see below), whose sum is σ = 1382355000. Its totient is φ = 106748928.

The previous prime is 400314227. The next prime is 400314263. The reversal of 400314240 is 42413004.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28990 + ... + 40509.

Almost surely, 2^400314240 is an apocalyptic number.

400314240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

400314240 is an abundant number, since it is smaller than the sum of its proper divisors (982040760).

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

400314240 is a wasteful number, since it uses less digits than its factorization.

400314240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69524 (or 69509 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 400314240 is about 20007.8544576874. The cubic root of 400314240 is about 736.9991942339. Note that the first 3 decimals are identical.

Adding to 400314240 its reverse (42413004), we get a palindrome (442727244).

The spelling of 400314240 in words is "four hundred million, three hundred fourteen thousand, two hundred forty".