28258522790 has 16 divisors (see below), whose sum is σ = 51478177968. Its totient is φ = 11167223136.

The previous prime is 28258522777. The next prime is 28258522801. The reversal of 28258522790 is 9722585282.

It is a super-2 number, since 2×28258522790² (a number of 22 digits) contains 22 as substring.

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, 17022377 + ... + 17024036.

It is an arithmetic number, because the mean of its divisors is an integer number (3217386123).

Almost surely, 2^28258522790 is an apocalyptic number.

28258522790 is a deficient number, since it is larger than the sum of its proper divisors (23219655178).

28258522790 is a wasteful number, since it uses less digits than its factorization.

28258522790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34046503.

The product of its (nonzero) digits is 1612800, while the sum is 50.

The spelling of 28258522790 in words is "twenty-eight billion, two hundred fifty-eight million, five hundred twenty-two thousand, seven hundred ninety".