28242534 has 16 divisors (see below), whose sum is σ = 57551472. Its totient is φ = 9236448.

The previous prime is 28242527. The next prime is 28242553. The reversal of 28242534 is 43524282.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44089 + ... + 44724.

It is an arithmetic number, because the mean of its divisors is an integer number (3596967).

Almost surely, 2^28242534 is an apocalyptic number.

28242534 is an abundant number, since it is smaller than the sum of its proper divisors (29308938).

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

28242534 is a wasteful number, since it uses less digits than its factorization.

28242534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88871.

The product of its digits is 15360, while the sum is 30.

The square root of 28242534 is about 5314.3705177565. The cubic root of 28242534 is about 304.5331350559.

The spelling of 28242534 in words is "twenty-eight million, two hundred forty-two thousand, five hundred thirty-four".