28135488 has 28 divisors (see below), whose sum is σ = 74442320. Its totient is φ = 9378432.

The previous prime is 28135487. The next prime is 28135489. The reversal of 28135488 is 88453182.

It is an interprime number because it is at equal distance from previous prime (28135487) and next prime (28135489).

It is not an unprimeable number, because it can be changed into a prime (28135483) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73078 + ... + 73461.

Almost surely, 2^28135488 is an apocalyptic number.

It is an amenable number.

28135488 is an abundant number, since it is smaller than the sum of its proper divisors (46306832).

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

28135488 is a wasteful number, since it uses less digits than its factorization.

28135488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146554 (or 146544 counting only the distinct ones).

The product of its digits is 61440, while the sum is 39.

The square root of 28135488 is about 5304.2895848549. The cubic root of 28135488 is about 304.1478966420.

The spelling of 28135488 in words is "twenty-eight million, one hundred thirty-five thousand, four hundred eighty-eight".