28664496 has 80 divisors (see below), whose sum is σ = 94041600. Its totient is φ = 8188992.

The previous prime is 28664479. The next prime is 28664539. The reversal of 28664496 is 69446682.

It is a super-3 number, since 3×28664496³ (a number of 23 digits) contains 333 as substring.

It is a nude number because it is divisible by every one of its digits.

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, 1716 + ... + 7763.

It is an arithmetic number, because the mean of its divisors is an integer number (1175520).

Almost surely, 2^28664496 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 28664496, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47020800).

28664496 is an abundant number, since it is smaller than the sum of its proper divisors (65377104).

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

28664496 is a wasteful number, since it uses less digits than its factorization.

28664496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9503 (or 9491 counting only the distinct ones).

The product of its digits is 497664, while the sum is 45.

The square root of 28664496 is about 5353.9234211931. The cubic root of 28664496 is about 306.0422855827.

The spelling of 28664496 in words is "twenty-eight million, six hundred sixty-four thousand, four hundred ninety-six".