28534860 has 36 divisors (see below), whose sum is σ = 86556288. Its totient is φ = 7609248.

The previous prime is 28534853. The next prime is 28534861. The reversal of 28534860 is 6843582.

It is a tau number, because it is divible by the number of its divisors (36).

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

It is not an unprimeable number, because it can be changed into a prime (28534861) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 79084 + ... + 79443.

Almost surely, 2^28534860 is an apocalyptic number.

28534860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28534860 is an abundant number, since it is smaller than the sum of its proper divisors (58021428).

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

28534860 is a wasteful number, since it uses less digits than its factorization.

28534860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158542 (or 158537 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The square root of 28534860 is about 5341.8030663812. The cubic root of 28534860 is about 305.5802266703.

The spelling of 28534860 in words is "twenty-eight million, five hundred thirty-four thousand, eight hundred sixty".