299905056 has 144 divisors (see below), whose sum is σ = 938534688. Its totient is φ = 90086400.

The previous prime is 299905049. The next prime is 299905079. The reversal of 299905056 is 650509992.

It is a tau number, because it is divible by the number of its divisors (144).

It is a super-2 number, since 2×299905056² = 179886085228726272, which contains 22 as substring.

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 an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 433671 + ... + 434361.

It is an arithmetic number, because the mean of its divisors is an integer number (6517602).

Almost surely, 2^299905056 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 299905056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (469267344).

299905056 is an abundant number, since it is smaller than the sum of its proper divisors (638629632).

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

299905056 is a wasteful number, since it uses less digits than its factorization.

299905056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 855 (or 844 counting only the distinct ones).

The product of its (nonzero) digits is 218700, while the sum is 45.

The square root of 299905056 is about 17317.7670616047. The cubic root of 299905056 is about 669.3623219175.

The spelling of 299905056 in words is "two hundred ninety-nine million, nine hundred five thousand, fifty-six".