28653488 has 20 divisors (see below), whose sum is σ = 56346840. Its totient is φ = 14112384.

The previous prime is 28653473. The next prime is 28653491. The reversal of 28653488 is 88435682.

It is a super-2 number, since 2×28653488² = 1642044749132288, which contains 22 as substring.

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, 12293 + ... + 14436.

It is an arithmetic number, because the mean of its divisors is an integer number (2817342).

Almost surely, 2^28653488 is an apocalyptic number.

It is an amenable number.

28653488 is a deficient number, since it is larger than the sum of its proper divisors (27693352).

28653488 is a wasteful number, since it uses less digits than its factorization.

28653488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26804 (or 26798 counting only the distinct ones).

The product of its digits is 368640, while the sum is 44.

The square root of 28653488 is about 5352.8952913353. The cubic root of 28653488 is about 306.0031041877.

The spelling of 28653488 in words is "twenty-eight million, six hundred fifty-three thousand, four hundred eighty-eight".