28701576 has 96 divisors (see below), whose sum is σ = 83397600. Its totient is φ = 8885760.

The previous prime is 28701551. The next prime is 28701601. The reversal of 28701576 is 67510782.

28701576 is a `hidden beast` number, since 2 + 87 + 0 + 1 + 576 = 666.

It is an interprime number because it is at equal distance from previous prime (28701551) and next prime (28701601).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 28701576.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 160255 + ... + 160433.

It is an arithmetic number, because the mean of its divisors is an integer number (868725).

Almost surely, 2^28701576 is an apocalyptic number.

28701576 is the 2864-th nonagonal number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28701576, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41698800).

28701576 is an abundant number, since it is smaller than the sum of its proper divisors (54696024).

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

28701576 is a wasteful number, since it uses less digits than its factorization.

28701576 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339 (or 332 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 36.

The square root of 28701576 is about 5357.3851830907. The cubic root of 28701576 is about 306.1741927597.

The spelling of 28701576 in words is "twenty-eight million, seven hundred one thousand, five hundred seventy-six".