500921400 has 96 divisors (see below), whose sum is σ = 1774707840. Its totient is φ = 114495360.

The previous prime is 500921357. The next prime is 500921423. The reversal of 500921400 is 4129005.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 55434 + ... + 63833.

It is an arithmetic number, because the mean of its divisors is an integer number (18486540).

Almost surely, 2^500921400 is an apocalyptic number.

500921400 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

500921400 is an abundant number, since it is smaller than the sum of its proper divisors (1273786440).

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

500921400 is a wasteful number, since it uses less digits than its factorization.

500921400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119293 (or 119284 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 500921400 is about 22381.2734222162. The cubic root of 500921400 is about 794.1877705849.

The spelling of 500921400 in words is "five hundred million, nine hundred twenty-one thousand, four hundred".