28630560 has 96 divisors (see below), whose sum is σ = 103082112. Its totient is φ = 6543360.

The previous prime is 28630543. The next prime is 28630573. The reversal of 28630560 is 6503682.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 901 + ... + 7620.

It is an arithmetic number, because the mean of its divisors is an integer number (1073772).

Almost surely, 2^28630560 is an apocalyptic number.

28630560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28630560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51541056).

28630560 is an abundant number, since it is smaller than the sum of its proper divisors (74451552).

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

28630560 is a wasteful number, since it uses less digits than its factorization.

28630560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8546 (or 8538 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 28630560 is about 5350.7532180059. The cubic root of 28630560 is about 305.9214630349.

The spelling of 28630560 in words is "twenty-eight million, six hundred thirty thousand, five hundred sixty".