28738854 has 32 divisors (see below), whose sum is σ = 64496640. Its totient is φ = 9484776.

The previous prime is 28738847. The next prime is 28738889. The reversal of 28738854 is 45883782.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2979 + ... + 8145.

It is an arithmetic number, because the mean of its divisors is an integer number (2015520).

Almost surely, 2^28738854 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28738854, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32248320).

28738854 is an abundant number, since it is smaller than the sum of its proper divisors (35757786).

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

28738854 is a wasteful number, since it uses less digits than its factorization.

28738854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5281 (or 5275 counting only the distinct ones).

The product of its digits is 430080, while the sum is 45.

The square root of 28738854 is about 5360.8631767655. The cubic root of 28738854 is about 306.3066898248.

It can be divided in two parts, 28738 and 854, that added together give a palindrome (29592).

The spelling of 28738854 in words is "twenty-eight million, seven hundred thirty-eight thousand, eight hundred fifty-four".