28695580 has 12 divisors (see below), whose sum is σ = 60260760. Its totient is φ = 11478224.

The previous prime is 28695551. The next prime is 28695617. The reversal of 28695580 is 8559682.

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, 717370 + ... + 717409.

It is an arithmetic number, because the mean of its divisors is an integer number (5021730).

Almost surely, 2^28695580 is an apocalyptic number.

28695580 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28695580 is an abundant number, since it is smaller than the sum of its proper divisors (31565180).

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

28695580 is a wasteful number, since it uses less digits than its factorization.

28695580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1434788 (or 1434786 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 43.

The square root of 28695580 is about 5356.8255525078. The cubic root of 28695580 is about 306.1528704890.

The spelling of 28695580 in words is "twenty-eight million, six hundred ninety-five thousand, five hundred eighty".