28010580 has 48 divisors (see below), whose sum is σ = 84465024. Its totient is φ = 6894720.

The previous prime is 28010557. The next prime is 28010581. The reversal of 28010580 is 8501082.

It is a self number, because there is not a number n which added to its sum of digits gives 28010580.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28010581) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17176 + ... + 18735.

It is an arithmetic number, because the mean of its divisors is an integer number (1759688).

Almost surely, 2^28010580 is an apocalyptic number.

28010580 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28010580 is an abundant number, since it is smaller than the sum of its proper divisors (56454444).

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

28010580 is a wasteful number, since it uses less digits than its factorization.

28010580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35936 (or 35934 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 24.

The square root of 28010580 is about 5292.5022437407. The cubic root of 28010580 is about 303.6971389324.

The spelling of 28010580 in words is "twenty-eight million, ten thousand, five hundred eighty".