397052280 has 96 divisors (see below), whose sum is σ = 1338246000. Its totient is φ = 105878016.

The previous prime is 397052269. The next prime is 397052317. The reversal of 397052280 is 82250793.

It is a happy number.

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

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, 10705 + ... + 30144.

Almost surely, 2^397052280 is an apocalyptic number.

397052280 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

397052280 is an abundant number, since it is smaller than the sum of its proper divisors (941193720).

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

397052280 is a wasteful number, since it uses less digits than its factorization.

397052280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40875 (or 40859 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 397052280 is about 19926.1707309759. The cubic root of 397052280 is about 734.9919199445.

The spelling of 397052280 in words is "three hundred ninety-seven million, fifty-two thousand, two hundred eighty".