299907072 has 144 divisors (see below), whose sum is σ = 885404520. Its totient is φ = 97763328.

The previous prime is 299907061. The next prime is 299907079. The reversal of 299907072 is 270709992.

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

It is a super-2 number, since 2×299907072² = 179888503671226368, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (299907079) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 976743 + ... + 977049.

Almost surely, 2^299907072 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 299907072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (442702260).

299907072 is an abundant number, since it is smaller than the sum of its proper divisors (585497448).

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

299907072 is a wasteful number, since it uses less digits than its factorization.

299907072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388 (or 365 counting only the distinct ones).

The product of its (nonzero) digits is 142884, while the sum is 45.

The square root of 299907072 is about 17317.8252676253. The cubic root of 299907072 is about 669.3638217604.

The spelling of 299907072 in words is "two hundred ninety-nine million, nine hundred seven thousand, seventy-two".