9772992780 has 48 divisors (see below), whose sum is σ = 28103964000. Its totient is φ = 2535694848.

The previous prime is 9772992731. The next prime is 9772992797. The reversal of 9772992780 is 872992779.

It is a super-2 number, since 2×9772992780² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2198905 + ... + 2203344.

It is an arithmetic number, because the mean of its divisors is an integer number (585499250).

Almost surely, 2^9772992780 is an apocalyptic number.

It is an amenable number.

9772992780 is an abundant number, since it is smaller than the sum of its proper divisors (18330971220).

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

9772992780 is a wasteful number, since it uses less digits than its factorization.

9772992780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4402298 (or 4402296 counting only the distinct ones).

The product of its (nonzero) digits is 8001504, while the sum is 60.

The square root of 9772992780 is about 98858.4481974100. The cubic root of 9772992780 is about 2138.0073438842.

The spelling of 9772992780 in words is "nine billion, seven hundred seventy-two million, nine hundred ninety-two thousand, seven hundred eighty".