28789932 has 24 divisors (see below), whose sum is σ = 68124672. Its totient is φ = 9461200.

The previous prime is 28789931. The next prime is 28789933. The reversal of 28789932 is 23998782.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (28789931) and next prime (28789933).

It is not an unprimeable number, because it can be changed into a prime (28789931) 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, 16044 + ... + 17747.

It is an arithmetic number, because the mean of its divisors is an integer number (2838528).

Almost surely, 2^28789932 is an apocalyptic number.

It is an amenable number.

28789932 is an abundant number, since it is smaller than the sum of its proper divisors (39334740).

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

28789932 is a wasteful number, since it uses less digits than its factorization.

28789932 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33869 (or 33867 counting only the distinct ones).

The product of its digits is 435456, while the sum is 48.

The square root of 28789932 is about 5365.6250334886. The cubic root of 28789932 is about 306.4880502603.

The spelling of 28789932 in words is "twenty-eight million, seven hundred eighty-nine thousand, nine hundred thirty-two".