28774410 has 64 divisors (see below), whose sum is σ = 80047872. Its totient is φ = 6483456.

The previous prime is 28774399. The next prime is 28774441. The reversal of 28774410 is 1447782.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14392 + ... + 16268.

It is an arithmetic number, because the mean of its divisors is an integer number (1250748).

Almost surely, 2^28774410 is an apocalyptic number.

28774410 is the 4380-th pentagonal number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28774410, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40023936).

28774410 is an abundant number, since it is smaller than the sum of its proper divisors (51273462).

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

28774410 is a wasteful number, since it uses less digits than its factorization.

28774410 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1967.

The product of its (nonzero) digits is 12544, while the sum is 33.

The square root of 28774410 is about 5364.1784086661. The cubic root of 28774410 is about 306.4329596736.

The spelling of 28774410 in words is "twenty-eight million, seven hundred seventy-four thousand, four hundred ten".