28659480 has 32 divisors (see below), whose sum is σ = 85978800. Its totient is φ = 7642496.

The previous prime is 28659473. The next prime is 28659487. The reversal of 28659480 is 8495682.

It is an interprime number because it is at equal distance from previous prime (28659473) and next prime (28659487).

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28659487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 119295 + ... + 119534.

Almost surely, 2^28659480 is an apocalyptic number.

28659480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28659480 is an abundant number, since it is smaller than the sum of its proper divisors (57319320).

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

28659480 is a wasteful number, since it uses less digits than its factorization.

28659480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238843 (or 238839 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 42.

The square root of 28659480 is about 5353.4549591829. The cubic root of 28659480 is about 306.0244330954.

The spelling of 28659480 in words is "twenty-eight million, six hundred fifty-nine thousand, four hundred eighty".