28893522 has 32 divisors (see below), whose sum is σ = 67830912. Its totient is φ = 8031744.

The previous prime is 28893517. The next prime is 28893569. The reversal of 28893522 is 22539882.

It is a super-2 number, since 2×28893522² = 1669671227128968, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7743 + ... + 10850.

It is an arithmetic number, because the mean of its divisors is an integer number (2119716).

Almost surely, 2^28893522 is an apocalyptic number.

28893522 is an abundant number, since it is smaller than the sum of its proper divisors (38937390).

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

28893522 is a wasteful number, since it uses less digits than its factorization.

28893522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18642.

The product of its digits is 69120, while the sum is 39.

The square root of 28893522 is about 5375.2694816167. The cubic root of 28893522 is about 306.8552051614.

The spelling of 28893522 in words is "twenty-eight million, eight hundred ninety-three thousand, five hundred twenty-two".