28702542 has 32 divisors (see below), whose sum is σ = 64157184. Its totient is φ = 8484800.

The previous prime is 28702529. The next prime is 28702549. The reversal of 28702542 is 24520782.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28702549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2598 + ... + 8009.

It is an arithmetic number, because the mean of its divisors is an integer number (2004912).

Almost surely, 2^28702542 is an apocalyptic number.

28702542 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

28702542 is an abundant number, since it is smaller than the sum of its proper divisors (35454642).

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

28702542 is a wasteful number, since it uses less digits than its factorization.

28702542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10664.

The product of its (nonzero) digits is 8960, while the sum is 30.

The square root of 28702542 is about 5357.4753382540. The cubic root of 28702542 is about 306.1776276576.

The spelling of 28702542 in words is "twenty-eight million, seven hundred two thousand, five hundred forty-two".