28101560 has 16 divisors (see below), whose sum is σ = 63228600. Its totient is φ = 11240608.

The previous prime is 28101547. The next prime is 28101583. The reversal of 28101560 is 6510182.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 351230 + ... + 351309.

Almost surely, 2^28101560 is an apocalyptic number.

28101560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28101560 is an abundant number, since it is smaller than the sum of its proper divisors (35127040).

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

28101560 is a wasteful number, since it uses less digits than its factorization.

28101560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 702550 (or 702546 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 23.

The square root of 28101560 is about 5301.0904538595. The cubic root of 28101560 is about 304.0255922591.

The spelling of 28101560 in words is "twenty-eight million, one hundred one thousand, five hundred sixty".