397573632 has 180 divisors, whose sum is σ = 1216060560. Its totient is φ = 125024256.

The previous prime is 397573619. The next prime is 397573633. The reversal of 397573632 is 236375793.

397573632 is a `hidden beast` number, since 3 + 9 + 7 + 5 + 7 + 3 + 632 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397573633) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1663369 + ... + 1663607.

It is an arithmetic number, because the mean of its divisors is an integer number (6755892).

Almost surely, 2^397573632 is an apocalyptic number.

397573632 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 397573632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (608030280).

397573632 is an abundant number, since it is smaller than the sum of its proper divisors (818486928).

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

397573632 is a wasteful number, since it uses less digits than its factorization.

397573632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301 (or 263 counting only the distinct ones).

The product of its digits is 714420, while the sum is 45.

The square root of 397573632 is about 19939.2485314768. The cubic root of 397573632 is about 735.3134745042.

The spelling of 397573632 in words is "three hundred ninety-seven million, five hundred seventy-three thousand, six hundred thirty-two".