28738892 has 36 divisors (see below), whose sum is σ = 63010080. Its totient is φ = 11368224.

The previous prime is 28738889. The next prime is 28738939. The reversal of 28738892 is 29883782.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3092 + ... + 8187.

It is an arithmetic number, because the mean of its divisors is an integer number (1750280).

Almost surely, 2^28738892 is an apocalyptic number.

It is an amenable number.

28738892 is an abundant number, since it is smaller than the sum of its proper divisors (34271188).

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

28738892 is a wasteful number, since it uses less digits than its factorization.

28738892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11310 (or 11301 counting only the distinct ones).

The product of its digits is 387072, while the sum is 47.

The square root of 28738892 is about 5360.8667209697. The cubic root of 28738892 is about 306.3068248296.

The spelling of 28738892 in words is "twenty-eight million, seven hundred thirty-eight thousand, eight hundred ninety-two".