27928736 has 36 divisors (see below), whose sum is σ = 60446106. Its totient is φ = 12693120.

The previous prime is 27928729. The next prime is 27928751. The reversal of 27928736 is 63782972.

It can be written as a sum of positive squares in only one way, i.e., 19749136 + 8179600 = 4444^2 + 2860^2 .

It is a Harshad number since it is a multiple of its sum of digits (44).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 266 + ... + 7478.

Almost surely, 2^27928736 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 27928736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30223053).

27928736 is an abundant number, since it is smaller than the sum of its proper divisors (32517370).

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

27928736 is a wasteful number, since it uses less digits than its factorization.

27928736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7245 (or 7226 counting only the distinct ones).

The product of its digits is 254016, while the sum is 44.

The square root of 27928736 is about 5284.7645169865. The cubic root of 27928736 is about 303.4010598950.

The spelling of 27928736 in words is "twenty-seven million, nine hundred twenty-eight thousand, seven hundred thirty-six".