28288770357 has 16 divisors (see below), whose sum is σ = 39561990912. Its totient is φ = 17959055040.

The previous prime is 28288770337. The next prime is 28288770371. The reversal of 28288770357 is 75307788282.

It is not a de Polignac number, because 28288770357 - 2⁷ = 28288770229 is a prime.

It is a super-2 number, since 2×28288770357² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28288770297 and 28288770306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28288770337) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2705994 + ... + 2716427.

It is an arithmetic number, because the mean of its divisors is an integer number (2472624432).

Almost surely, 2^28288770357 is an apocalyptic number.

It is an amenable number.

28288770357 is a deficient number, since it is larger than the sum of its proper divisors (11273220555).

28288770357 is a wasteful number, since it uses less digits than its factorization.

28288770357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5422508.

The product of its (nonzero) digits is 10536960, while the sum is 57.

The spelling of 28288770357 in words is "twenty-eight billion, two hundred eighty-eight million, seven hundred seventy thousand, three hundred fifty-seven".