28237685685 has 32 divisors (see below), whose sum is σ = 49295675520. Its totient is φ = 13688755200.

The previous prime is 28237685683. The next prime is 28237685689. The reversal of 28237685685 is 58658673282.

It is not a de Polignac number, because 28237685685 - 2¹ = 28237685683 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28237685683) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1470345 + ... + 1489425.

It is an arithmetic number, because the mean of its divisors is an integer number (1540489860).

Almost surely, 2^28237685685 is an apocalyptic number.

It is an amenable number.

28237685685 is a deficient number, since it is larger than the sum of its proper divisors (21057989835).

28237685685 is a wasteful number, since it uses less digits than its factorization.

28237685685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28069.

The product of its digits is 38707200, while the sum is 60.

The spelling of 28237685685 in words is "twenty-eight billion, two hundred thirty-seven million, six hundred eighty-five thousand, six hundred eighty-five".