28772496 has 75 divisors (see below), whose sum is σ = 83838601. Its totient is φ = 9526464.

The previous prime is 28772489. The next prime is 28772503. The reversal of 28772496 is 69427782.

The square root of 28772496 is 5364.

It is a perfect power (a square), and thus also a powerful number.

It is an interprime number because it is at equal distance from previous prime (28772489) and next prime (28772503).

It can be written as a sum of positive squares in only one way, i.e., 3370896 + 25401600 = 1836^2 + 5040^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 193030 + ... + 193178.

Almost surely, 2^28772496 is an apocalyptic number.

28772496 is the 5364-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28772496

28772496 is an abundant number, since it is smaller than the sum of its proper divisors (55066105).

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

28772496 is an equidigital number, since it uses as much as digits as its factorization.

28772496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318 (or 154 counting only the distinct ones).

The product of its digits is 338688, while the sum is 45.

The cubic root of 28772496 is about 306.4261651446.

The spelling of 28772496 in words is "twenty-eight million, seven hundred seventy-two thousand, four hundred ninety-six".