400364620 has 24 divisors (see below), whose sum is σ = 890223264. Its totient is φ = 150725376.

The previous prime is 400364617. The next prime is 400364621. The reversal of 400364620 is 26463004.

It is not an unprimeable number, because it can be changed into a prime (400364621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 588432 + ... + 589111.

It is an arithmetic number, because the mean of its divisors is an integer number (37092636).

Almost surely, 2^400364620 is an apocalyptic number.

It is an amenable number.

400364620 is an abundant number, since it is smaller than the sum of its proper divisors (489858644).

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

400364620 is a wasteful number, since it uses less digits than its factorization.

400364620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1177569 (or 1177567 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 400364620 is about 20009.1134236377. The cubic root of 400364620 is about 737.0301103312.

The spelling of 400364620 in words is "four hundred million, three hundred sixty-four thousand, six hundred twenty".