972877788 has 72 divisors (see below), whose sum is σ = 2515793280. Its totient is φ = 316910880.

The previous prime is 972877771. The next prime is 972877793. The reversal of 972877788 is 887778279.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 314433 + ... + 317511.

Almost surely, 2^972877788 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 972877788, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1257896640).

972877788 is an abundant number, since it is smaller than the sum of its proper divisors (1542915492).

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

972877788 is a wasteful number, since it uses less digits than its factorization.

972877788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3287 (or 3282 counting only the distinct ones).

The product of its digits is 22127616, while the sum is 63.

The square root of 972877788 is about 31190.9888910243. The cubic root of 972877788 is about 990.8762734406.

The spelling of 972877788 in words is "nine hundred seventy-two million, eight hundred seventy-seven thousand, seven hundred eighty-eight".