971556432 has 240 divisors, whose sum is σ = 3293122560. Its totient is φ = 241148160.

The previous prime is 971556419. The next prime is 971556449. The reversal of 971556432 is 234655179.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 934569 + ... + 935607.

It is an arithmetic number, because the mean of its divisors is an integer number (13721344).

Almost surely, 2^971556432 is an apocalyptic number.

971556432 is a gapful number since it is divisible by the number (92) 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 971556432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1646561280).

971556432 is an abundant number, since it is smaller than the sum of its proper divisors (2321566128).

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

971556432 is a wasteful number, since it uses less digits than its factorization.

971556432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1102 (or 1085 counting only the distinct ones).

The product of its digits is 226800, while the sum is 42.

The square root of 971556432 is about 31169.7999993584. The cubic root of 971556432 is about 990.4274697183.

The spelling of 971556432 in words is "nine hundred seventy-one million, five hundred fifty-six thousand, four hundred thirty-two".