28514580 has 24 divisors (see below), whose sum is σ = 79840992. Its totient is φ = 7603872.

The previous prime is 28514561. The next prime is 28514609. The reversal of 28514580 is 8541582.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 237562 + ... + 237681.

It is an arithmetic number, because the mean of its divisors is an integer number (3326708).

Almost surely, 2^28514580 is an apocalyptic number.

28514580 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28514580 is an abundant number, since it is smaller than the sum of its proper divisors (51326412).

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

28514580 is a wasteful number, since it uses less digits than its factorization.

28514580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 475255 (or 475253 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 33.

The square root of 28514580 is about 5339.9044935280. The cubic root of 28514580 is about 305.5078165761.

The spelling of 28514580 in words is "twenty-eight million, five hundred fourteen thousand, five hundred eighty".