299428920 has 128 divisors (see below), whose sum is σ = 1140710400. Its totient is φ = 68439168.

The previous prime is 299428903. The next prime is 299428933. The reversal of 299428920 is 29824992.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12244 + ... + 27363.

It is an arithmetic number, because the mean of its divisors is an integer number (8911800).

Almost surely, 2^299428920 is an apocalyptic number.

299428920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

299428920 is an abundant number, since it is smaller than the sum of its proper divisors (841281480).

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

299428920 is a wasteful number, since it uses less digits than its factorization.

299428920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39634 (or 39624 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The square root of 299428920 is about 17304.0145631007. The cubic root of 299428920 is about 669.0079027400.

The spelling of 299428920 in words is "two hundred ninety-nine million, four hundred twenty-eight thousand, nine hundred twenty".