28750896 has 40 divisors (see below), whose sum is σ = 82526960. Its totient is φ = 9583488.

The previous prime is 28750889. The next prime is 28750901. The reversal of 28750896 is 69805782.

It is a super-2 number, since 2×28750896² = 1653228041605632, which contains 22 as substring.

It is a nialpdrome in base 12.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32845 + ... + 33708.

It is an arithmetic number, because the mean of its divisors is an integer number (2063174).

Almost surely, 2^28750896 is an apocalyptic number.

It is an amenable number.

28750896 is an abundant number, since it is smaller than the sum of its proper divisors (53776064).

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

28750896 is a wasteful number, since it uses less digits than its factorization.

28750896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66570 (or 66558 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The square root of 28750896 is about 5361.9861991617. The cubic root of 28750896 is about 306.3494661779.

It can be divided in two parts, 28750 and 896, that added together give a triangular number (29646 = T₂₄₃).

The spelling of 28750896 in words is "twenty-eight million, seven hundred fifty thousand, eight hundred ninety-six".