28393522 has 4 divisors (see below), whose sum is σ = 42590286. Its totient is φ = 14196760.

The previous prime is 28393513. The next prime is 28393537. The reversal of 28393522 is 22539382.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 28291761 + 101761 = 5319^2 + 319^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7098379 + ... + 7098382.

Almost surely, 2^28393522 is an apocalyptic number.

28393522 is a deficient number, since it is larger than the sum of its proper divisors (14196764).

28393522 is a wasteful number, since it uses less digits than its factorization.

28393522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14196763.

The product of its digits is 25920, while the sum is 34.

The square root of 28393522 is about 5328.5572156072. The cubic root of 28393522 is about 305.0748611368.

The spelling of 28393522 in words is "twenty-eight million, three hundred ninety-three thousand, five hundred twenty-two".