28270560 has 48 divisors (see below), whose sum is σ = 89053776. Its totient is φ = 7538688.

The previous prime is 28270559. The next prime is 28270573. The reversal of 28270560 is 6507282.

It is a tau number, because it is divible by the number of its divisors (48).

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 7 ways as a sum of consecutive naturals, for example, 28969 + ... + 29928.

It is an arithmetic number, because the mean of its divisors is an integer number (1855287).

Almost surely, 2^28270560 is an apocalyptic number.

28270560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28270560 is an abundant number, since it is smaller than the sum of its proper divisors (60783216).

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

28270560 is a wasteful number, since it uses less digits than its factorization.

28270560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58915 (or 58907 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 28270560 is about 5317.0066766932. The cubic root of 28270560 is about 304.6338345194.

The spelling of 28270560 in words is "twenty-eight million, two hundred seventy thousand, five hundred sixty".