28746853531 has 16 divisors (see below), whose sum is σ = 33184608768. Its totient is φ = 24645174400.

The previous prime is 28746853501. The next prime is 28746853537. The reversal of 28746853531 is 13535864782.

It is a happy number.

It is not a de Polignac number, because 28746853531 - 2²⁵ = 28713299099 is a prime.

It is a super-2 number, since 2×28746853531² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28746853537) 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, 782206 + ... + 818131.

It is an arithmetic number, because the mean of its divisors is an integer number (2074038048).

Almost surely, 2^28746853531 is an apocalyptic number.

28746853531 is a deficient number, since it is larger than the sum of its proper divisors (4437755237).

28746853531 is a wasteful number, since it uses less digits than its factorization.

28746853531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1600442.

The product of its digits is 4838400, while the sum is 52.

The spelling of 28746853531 in words is "twenty-eight billion, seven hundred forty-six million, eight hundred fifty-three thousand, five hundred thirty-one".