397260288 has 240 divisors, whose sum is σ = 1239254016. Its totient is φ = 126904320.

The previous prime is 397260277. The next prime is 397260307. The reversal of 397260288 is 882062793.

397260288 is a `hidden beast` number, since 39 + 7 + 2 + 602 + 8 + 8 = 666.

It is a congruent number.

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, 3856845 + ... + 3856947.

Almost surely, 2^397260288 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 397260288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (619627008).

397260288 is an abundant number, since it is smaller than the sum of its proper divisors (841993728).

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

397260288 is an equidigital number, since it uses as much as digits as its factorization.

397260288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167 (or 139 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 397260288 is about 19931.3895150338. The cubic root of 397260288 is about 735.1202468820.

The spelling of 397260288 in words is "three hundred ninety-seven million, two hundred sixty thousand, two hundred eighty-eight".