28454226620 has 24 divisors (see below), whose sum is σ = 59766554400. Its totient is φ = 11379275712.

The previous prime is 28454226589. The next prime is 28454226623. The reversal of 28454226620 is 2662245482.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28454226623) 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, 52760 + ... + 244319.

It is an arithmetic number, because the mean of its divisors is an integer number (2490273100).

Almost surely, 2^28454226620 is an apocalyptic number.

28454226620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28454226620 is an abundant number, since it is smaller than the sum of its proper divisors (31312327780).

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

28454226620 is a wasteful number, since it uses less digits than its factorization.

28454226620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301877 (or 301875 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 41.

The spelling of 28454226620 in words is "twenty-eight billion, four hundred fifty-four million, two hundred twenty-six thousand, six hundred twenty".