397836280 has 32 divisors (see below), whose sum is σ = 899393040. Its totient is φ = 158376960.

The previous prime is 397836253. The next prime is 397836289. The reversal of 397836280 is 82638793.

It is a self number, because there is not a number n which added to its sum of digits gives 397836280.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397836289) 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, 15129 + ... + 32008.

Almost surely, 2^397836280 is an apocalyptic number.

It is an amenable number.

397836280 is an abundant number, since it is smaller than the sum of its proper divisors (501556760).

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

397836280 is a wasteful number, since it uses less digits than its factorization.

397836280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47359 (or 47355 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 46.

The square root of 397836280 is about 19945.8336501636. The cubic root of 397836280 is about 735.4753615819.

The spelling of 397836280 in words is "three hundred ninety-seven million, eight hundred thirty-six thousand, two hundred eighty".