28192542 has 80 divisors (see below), whose sum is σ = 69912960. Its totient is φ = 7556976.

The previous prime is 28192537. The next prime is 28192583. The reversal of 28192542 is 24529182.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 273663 + ... + 273765.

It is an arithmetic number, because the mean of its divisors is an integer number (873912).

Almost surely, 2^28192542 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28192542, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34956480).

28192542 is an abundant number, since it is smaller than the sum of its proper divisors (41720418).

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

28192542 is a wasteful number, since it uses less digits than its factorization.

28192542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155 (or 134 counting only the distinct ones).

The product of its digits is 11520, while the sum is 33.

The square root of 28192542 is about 5309.6649611816. The cubic root of 28192542 is about 304.3533446246.

The spelling of 28192542 in words is "twenty-eight million, one hundred ninety-two thousand, five hundred forty-two".