299905920 has 96 divisors (see below), whose sum is σ = 1035632520. Its totient is φ = 79973376.

The previous prime is 299905897. The next prime is 299905933. The reversal of 299905920 is 29509992.

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

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

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 11 ways as a sum of consecutive naturals, for example, 20274 + ... + 31793.

Almost surely, 2^299905920 is an apocalyptic number.

299905920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

299905920 is an abundant number, since it is smaller than the sum of its proper divisors (735726600).

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

299905920 is a wasteful number, since it uses less digits than its factorization.

299905920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52092 (or 52077 counting only the distinct ones).

The product of its (nonzero) digits is 131220, while the sum is 45.

The square root of 299905920 is about 17317.7920070660. The cubic root of 299905920 is about 669.3629647081.

The spelling of 299905920 in words is "two hundred ninety-nine million, nine hundred five thousand, nine hundred twenty".