28573702044 has 24 divisors (see below), whose sum is σ = 68822681088. Its totient is φ = 9217323120.

The previous prime is 28573702037. The next prime is 28573702097. The reversal of 28573702044 is 44020737582.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 28573701987 and 28573702005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38405142 + ... + 38405885.

It is an arithmetic number, because the mean of its divisors is an integer number (2867611712).

Almost surely, 2^28573702044 is an apocalyptic number.

It is an amenable number.

28573702044 is an abundant number, since it is smaller than the sum of its proper divisors (40248979044).

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

28573702044 is a wasteful number, since it uses less digits than its factorization.

28573702044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76811065 (or 76811063 counting only the distinct ones).

The product of its (nonzero) digits is 376320, while the sum is 42.

The spelling of 28573702044 in words is "twenty-eight billion, five hundred seventy-three million, seven hundred two thousand, forty-four".