28098525 has 96 divisors (see below), whose sum is σ = 59996160. Its totient is φ = 11278080.

The previous prime is 28098523. The next prime is 28098547. The reversal of 28098525 is 52589082.

It is not a de Polignac number, because 28098525 - 2¹ = 28098523 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28098523) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 156886 + ... + 157064.

It is an arithmetic number, because the mean of its divisors is an integer number (624960).

Almost surely, 2^28098525 is an apocalyptic number.

28098525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28098525 is an abundant number, since it is smaller than the sum of its proper divisors (31897635).

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

28098525 is a wasteful number, since it uses less digits than its factorization.

28098525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235 (or 230 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 39.

The square root of 28098525 is about 5300.8041842724. The cubic root of 28098525 is about 304.0146468301.

The spelling of 28098525 in words is "twenty-eight million, ninety-eight thousand, five hundred twenty-five".