397426360 has 64 divisors (see below), whose sum is σ = 928972800. Its totient is φ = 152908416.

The previous prime is 397426333. The next prime is 397426373. The reversal of 397426360 is 63624793.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 109129 + ... + 112711.

It is an arithmetic number, because the mean of its divisors is an integer number (14515200).

Almost surely, 2^397426360 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 397426360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (464486400).

397426360 is an abundant number, since it is smaller than the sum of its proper divisors (531546440).

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

397426360 is a wasteful number, since it uses less digits than its factorization.

397426360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3700 (or 3696 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 40.

The square root of 397426360 is about 19935.5551716023. Note that the first 3 decimals coincide. The cubic root of 397426360 is about 735.2226699744. Note that the first 3 decimals are identical.

The spelling of 397426360 in words is "three hundred ninety-seven million, four hundred twenty-six thousand, three hundred sixty".