28989552 has 20 divisors (see below), whose sum is σ = 74889800. Its totient is φ = 9663168.

The previous prime is 28989551. The next prime is 28989563. The reversal of 28989552 is 25598982.

It is a Harshad number since it is a multiple of its sum of digits (48), and also a Moran number because the ratio is a prime number: 603949 = 28989552 / (2 + 8 + 9 + 8 + 9 + 5 + 5 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28989551) 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, 301927 + ... + 302022.

It is an arithmetic number, because the mean of its divisors is an integer number (3744490).

Almost surely, 2^28989552 is an apocalyptic number.

It is an amenable number.

28989552 is an abundant number, since it is smaller than the sum of its proper divisors (45900248).

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

28989552 is a wasteful number, since it uses less digits than its factorization.

28989552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 603960 (or 603954 counting only the distinct ones).

The product of its digits is 518400, while the sum is 48.

The square root of 28989552 is about 5384.1946472987. The cubic root of 28989552 is about 307.1947820837.

The spelling of 28989552 in words is "twenty-eight million, nine hundred eighty-nine thousand, five hundred fifty-two".