297138132 has 30 divisors (see below), whose sum is σ = 776778618. Its totient is φ = 99045936.

The previous prime is 297138119. The next prime is 297138139. The reversal of 297138132 is 231831792.

It can be written as a sum of positive squares in only one way, i.e., 285069456 + 12068676 = 16884^2 + 3474^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (297138139) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 458223 + ... + 458870.

Almost surely, 2^297138132 is an apocalyptic number.

It is an amenable number.

297138132 is an abundant number, since it is smaller than the sum of its proper divisors (479640486).

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

297138132 is a wasteful number, since it uses less digits than its factorization.

297138132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 917109 (or 917098 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 297138132 is about 17237.6950895414. The cubic root of 297138132 is about 667.2974464315.

The spelling of 297138132 in words is "two hundred ninety-seven million, one hundred thirty-eight thousand, one hundred thirty-two".