28445522897430 has 168 divisors, whose sum is σ = 81549185020272. Its totient is φ = 7139267963136.

The previous prime is 28445522897383. The next prime is 28445522897471. The reversal of 28445522897430 is 3479822554482.

28445522897430 is a `hidden beast` number, since 2 + 8 + 4 + 4 + 5 + 522 + 8 + 9 + 74 + 30 = 666.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 83 ways as a sum of consecutive naturals, for example, 4644042 + ... + 8857661.

Almost surely, 2^{28445522897430} is an apocalyptic number.

28445522897430 is an abundant number, since it is smaller than the sum of its proper divisors (53103662122842).

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

28445522897430 is a wasteful number, since it uses less digits than its factorization.

28445522897430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13501762 (or 13501730 counting only the distinct ones).

The product of its (nonzero) digits is 154828800, while the sum is 63.

The spelling of 28445522897430 in words is "twenty-eight trillion, four hundred forty-five billion, five hundred twenty-two million, eight hundred ninety-seven thousand, four hundred thirty".