28769658 has 16 divisors (see below), whose sum is σ = 57620160. Its totient is φ = 9576416.

The previous prime is 28769647. The next prime is 28769669. The reversal of 28769658 is 85696782.

It is an interprime number because it is at equal distance from previous prime (28769647) and next prime (28769669).

It is a self number, because there is not a number n which added to its sum of digits gives 28769658.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1891 + ... + 7817.

It is an arithmetic number, because the mean of its divisors is an integer number (3601260).

Almost surely, 2^28769658 is an apocalyptic number.

28769658 is an abundant number, since it is smaller than the sum of its proper divisors (28850502).

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

28769658 is a wasteful number, since it uses less digits than its factorization.

28769658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6741.

The product of its digits is 1451520, while the sum is 51.

The square root of 28769658 is about 5363.7354520893. The cubic root of 28769658 is about 306.4160899435.

The spelling of 28769658 in words is "twenty-eight million, seven hundred sixty-nine thousand, six hundred fifty-eight".