28722789054 has 48 divisors (see below), whose sum is σ = 64559319552. Its totient is φ = 9571044888.

The previous prime is 28722789001. The next prime is 28722789061. The reversal of 28722789054 is 45098722782.

28722789054 is a `hidden beast` number, since 287 + 2 + 278 + 90 + 5 + 4 = 666.

It is a super-2 number, since 2×28722789054² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1762387 + ... + 1778609.

It is an arithmetic number, because the mean of its divisors is an integer number (1344985824).

Almost surely, 2^28722789054 is an apocalyptic number.

28722789054 is an abundant number, since it is smaller than the sum of its proper divisors (35836530498).

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

28722789054 is a wasteful number, since it uses less digits than its factorization.

28722789054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19883 (or 19871 counting only the distinct ones).

The product of its (nonzero) digits is 4515840, while the sum is 54.

The spelling of 28722789054 in words is "twenty-eight billion, seven hundred twenty-two million, seven hundred eighty-nine thousand, fifty-four".