22428231420 has 96 divisors (see below), whose sum is σ = 71804146176. Its totient is φ = 5124038400.

The previous prime is 22428231403. The next prime is 22428231421. The reversal of 22428231420 is 2413282422.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22428231421) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 971815 + ... + 994625.

It is an arithmetic number, because the mean of its divisors is an integer number (747959856).

Almost surely, 2^22428231420 is an apocalyptic number.

22428231420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22428231420 is an abundant number, since it is smaller than the sum of its proper divisors (49375914756).

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

22428231420 is a wasteful number, since it uses less digits than its factorization.

22428231420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25171 (or 25169 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 30.

The spelling of 22428231420 in words is "twenty-two billion, four hundred twenty-eight million, two hundred thirty-one thousand, four hundred twenty".