28981596 has 24 divisors (see below), whose sum is σ = 77284480. Its totient is φ = 8280432.

The previous prime is 28981591. The next prime is 28981597. The reversal of 28981596 is 69518982.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28981591) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 172426 + ... + 172593.

Almost surely, 2^28981596 is an apocalyptic number.

It is an amenable number.

28981596 is an abundant number, since it is smaller than the sum of its proper divisors (48302884).

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

28981596 is a wasteful number, since it uses less digits than its factorization.

28981596 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345033 (or 345031 counting only the distinct ones).

The product of its digits is 311040, while the sum is 48.

The square root of 28981596 is about 5383.4557674416. The cubic root of 28981596 is about 307.1666769546.

The spelling of 28981596 in words is "twenty-eight million, nine hundred eighty-one thousand, five hundred ninety-six".