28772704 has 48 divisors (see below), whose sum is σ = 60501168. Its totient is φ = 13422592.

The previous prime is 28772699. The next prime is 28772713. The reversal of 28772704 is 40727782.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 123372 + ... + 123604.

It is an arithmetic number, because the mean of its divisors is an integer number (1260441).

Almost surely, 2^28772704 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 28772704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30250584).

28772704 is an abundant number, since it is smaller than the sum of its proper divisors (31728464).

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

28772704 is a wasteful number, since it uses less digits than its factorization.

28772704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 487 (or 479 counting only the distinct ones).

The product of its (nonzero) digits is 43904, while the sum is 37.

The square root of 28772704 is about 5364.0193884810. The cubic root of 28772704 is about 306.4269035406.

The spelling of 28772704 in words is "twenty-eight million, seven hundred seventy-two thousand, seven hundred four".