28982772 has 120 divisors (see below), whose sum is σ = 93346176. Its totient is φ = 7636032.

The previous prime is 28982753. The next prime is 28982791. The reversal of 28982772 is 27728982.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (28982753) and next prime (28982791).

Its product of digits (225792) is a multiple of the sum of its prime divisors (1008).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 28993 + ... + 29975.

Almost surely, 2^28982772 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 28982772, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46673088).

28982772 is an abundant number, since it is smaller than the sum of its proper divisors (64363404).

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

28982772 is a wasteful number, since it uses less digits than its factorization.

28982772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1019 (or 1008 counting only the distinct ones).

The product of its digits is 225792, while the sum is 45.

The square root of 28982772 is about 5383.5649898557. The cubic root of 28982772 is about 307.1708315812.

The spelling of 28982772 in words is "twenty-eight million, nine hundred eighty-two thousand, seven hundred seventy-two".