28237698692 has 72 divisors (see below), whose sum is σ = 61660186560. Its totient is φ = 11069472960.

The previous prime is 28237698691. The next prime is 28237698701. The reversal of 28237698692 is 29689673282.

It is not an unprimeable number, because it can be changed into a prime (28237698691) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 244967 + ... + 341297.

It is an arithmetic number, because the mean of its divisors is an integer number (856391480).

Almost surely, 2^28237698692 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28237698692, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30830093280).

28237698692 is an abundant number, since it is smaller than the sum of its proper divisors (33422487868).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28237698692 is a wasteful number, since it uses less digits than its factorization.

28237698692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96409 (or 96388 counting only the distinct ones).

The product of its digits is 31352832, while the sum is 62.

The spelling of 28237698692 in words is "twenty-eight billion, two hundred thirty-seven million, six hundred ninety-eight thousand, six hundred ninety-two".