397736832 has 64 divisors (see below), whose sum is σ = 1059555600. Its totient is φ = 132194304.

The previous prime is 397736831. The next prime is 397736837. The reversal of 397736832 is 238637793.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397736831) 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, 151144 + ... + 153752.

Almost surely, 2^397736832 is an apocalyptic number.

397736832 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 397736832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (529777800).

397736832 is an abundant number, since it is smaller than the sum of its proper divisors (661818768).

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

397736832 is a wasteful number, since it uses less digits than its factorization.

397736832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3023 (or 3011 counting only the distinct ones).

The product of its digits is 1143072, while the sum is 48.

The square root of 397736832 is about 19943.3405426473. The cubic root of 397736832 is about 735.4140736831.

The spelling of 397736832 in words is "three hundred ninety-seven million, seven hundred thirty-six thousand, eight hundred thirty-two".