28817052 has 48 divisors (see below), whose sum is σ = 75073152. Its totient is φ = 8527680.

The previous prime is 28817003. The next prime is 28817069. The reversal of 28817052 is 25071882.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

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, 3138 + ... + 8214.

It is an arithmetic number, because the mean of its divisors is an integer number (1564024).

Almost surely, 2^28817052 is an apocalyptic number.

28817052 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28817052, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37536576).

28817052 is an abundant number, since it is smaller than the sum of its proper divisors (46256100).

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

28817052 is a wasteful number, since it uses less digits than its factorization.

28817052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5138 (or 5136 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 33.

The square root of 28817052 is about 5368.1516372025. The cubic root of 28817052 is about 306.5842568942.

The spelling of 28817052 in words is "twenty-eight million, eight hundred seventeen thousand, fifty-two".