28076853731 has 4 divisors (see below), whose sum is σ = 28077258864. Its totient is φ = 28076448600.

The previous prime is 28076853713. The next prime is 28076853737. The reversal of 28076853731 is 13735867082.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28076853731 - 2²² = 28072659427 is a prime.

It is a super-2 number, since 2×28076853731² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28076853731.

It is not an unprimeable number, because it can be changed into a prime (28076853737) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69455 + ... + 246936.

It is an arithmetic number, because the mean of its divisors is an integer number (7019314716).

Almost surely, 2^28076853731 is an apocalyptic number.

28076853731 is a deficient number, since it is larger than the sum of its proper divisors (405133).

28076853731 is an equidigital number, since it uses as much as digits as its factorization.

28076853731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405132.

The product of its (nonzero) digits is 1693440, while the sum is 50.

The spelling of 28076853731 in words is "twenty-eight billion, seventy-six million, eight hundred fifty-three thousand, seven hundred thirty-one".