28728954 has 24 divisors (see below), whose sum is σ = 62375040. Its totient is φ = 9556488.

The previous prime is 28728949. The next prime is 28728967. The reversal of 28728954 is 45982782.

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, 9207 + ... + 11925.

It is an arithmetic number, because the mean of its divisors is an integer number (2598960).

Almost surely, 2^28728954 is an apocalyptic number.

28728954 is an abundant number, since it is smaller than the sum of its proper divisors (33646086).

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

28728954 is a wasteful number, since it uses less digits than its factorization.

28728954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3314 (or 3311 counting only the distinct ones).

The product of its digits is 322560, while the sum is 45.

The square root of 28728954 is about 5359.9397384672. The cubic root of 28728954 is about 306.2715134686.

It can be divided in two parts, 287 and 28954, that added together give a square (29241 = 171²).

The spelling of 28728954 in words is "twenty-eight million, seven hundred twenty-eight thousand, nine hundred fifty-four".