9772210428 has 24 divisors (see below), whose sum is σ = 22825928832. Its totient is φ = 3253959984.

The previous prime is 9772210423. The next prime is 9772210439. The reversal of 9772210428 is 8240122779.

It is a super-2 number, since 2×9772210428² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 9772210428.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9772210423) 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, 418600 + ... + 441327.

It is an arithmetic number, because the mean of its divisors is an integer number (951080368).

Almost surely, 2^9772210428 is an apocalyptic number.

It is an amenable number.

9772210428 is an abundant number, since it is smaller than the sum of its proper divisors (13053718404).

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

9772210428 is a wasteful number, since it uses less digits than its factorization.

9772210428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 860881 (or 860879 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 42.

The square root of 9772210428 is about 98854.4911878059. The cubic root of 9772210428 is about 2137.9502914543.

The spelling of 9772210428 in words is "nine billion, seven hundred seventy-two million, two hundred ten thousand, four hundred twenty-eight".