297630872 has 32 divisors (see below), whose sum is σ = 695761920. Its totient is φ = 115959840.

The previous prime is 297630871. The next prime is 297630887. The reversal of 297630872 is 278036792.

It is a Smith number, since the sum of its digits (44) 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 (44).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (297630871) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 240968 + ... + 242199.

It is an arithmetic number, because the mean of its divisors is an integer number (21742560).

Almost surely, 2^297630872 is an apocalyptic number.

297630872 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

297630872 is an abundant number, since it is smaller than the sum of its proper divisors (398131048).

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

297630872 is a wasteful number, since it uses less digits than its factorization.

297630872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 483191 (or 483187 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 44.

The square root of 297630872 is about 17251.9816832734. The cubic root of 297630872 is about 667.6660993970. Note that the first 3 decimals are identical.

The spelling of 297630872 in words is "two hundred ninety-seven million, six hundred thirty thousand, eight hundred seventy-two".