397250420 has 24 divisors (see below), whose sum is σ = 953401344. Its totient is φ = 136200096.

The previous prime is 397250393. The next prime is 397250429. The reversal of 397250420 is 24052793.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397250429) 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, 1418612 + ... + 1418891.

It is an arithmetic number, because the mean of its divisors is an integer number (39725056).

Almost surely, 2^397250420 is an apocalyptic number.

It is an amenable number.

397250420 is an abundant number, since it is smaller than the sum of its proper divisors (556150924).

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

397250420 is a wasteful number, since it uses less digits than its factorization.

397250420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2837519 (or 2837517 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 397250420 is about 19931.1419642729. The cubic root of 397250420 is about 735.1141600024.

The spelling of 397250420 in words is "three hundred ninety-seven million, two hundred fifty thousand, four hundred twenty".