428922780972 has 48 divisors (see below), whose sum is σ = 1193524265472. Its totient is φ = 117221132160.

The previous prime is 428922780953. The next prime is 428922780977. The reversal of 428922780972 is 279087229824.

It is not an unprimeable number, because it can be changed into a prime (428922780977) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 111002929 + ... + 111006792.

It is an arithmetic number, because the mean of its divisors is an integer number (24865088864).

Almost surely, 2^428922780972 is an apocalyptic number.

428922780972 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

428922780972 is an abundant number, since it is smaller than the sum of its proper divisors (764601484500).

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

428922780972 is a wasteful number, since it uses less digits than its factorization.

428922780972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222009758 (or 222009756 counting only the distinct ones).

The product of its (nonzero) digits is 16257024, while the sum is 60.

The spelling of 428922780972 in words is "four hundred twenty-eight billion, nine hundred twenty-two million, seven hundred eighty thousand, nine hundred seventy-two".