9972788 has 12 divisors (see below), whose sum is σ = 19945632. Its totient is φ = 4274040.

The previous prime is 9972779. The next prime is 9972803. The reversal of 9972788 is 8872799.

It is a happy number.

9972788 is an admirable number.

It is a d-powerful number, because it can be written as 9⁴ + 9⁴ + 7² + 2²¹ + 7⁸ + 8³ + 8⁷ .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 178058 + ... + 178113.

It is an arithmetic number, because the mean of its divisors is an integer number (1662136).

Almost surely, 2^9972788 is an apocalyptic number.

It is an amenable number.

9972788 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

9972788 is a wasteful number, since it uses less digits than its factorization.

9972788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356182 (or 356180 counting only the distinct ones).

The product of its digits is 508032, while the sum is 50.

The square root of 9972788 is about 3157.9721341392. The cubic root of 9972788 is about 215.2478698850.

The spelling of 9972788 in words is "nine million, nine hundred seventy-two thousand, seven hundred eighty-eight".