28927542 has 48 divisors (see below), whose sum is σ = 68446512. Its totient is φ = 8124480.

The previous prime is 28927501. The next prime is 28927543. The reversal of 28927542 is 24572982.

It is a self number, because there is not a number n which added to its sum of digits gives 28927542.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28927543) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17128 + ... + 18740.

It is an arithmetic number, because the mean of its divisors is an integer number (1425969).

Almost surely, 2^28927542 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28927542, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34223256).

28927542 is an abundant number, since it is smaller than the sum of its proper divisors (39518970).

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

28927542 is a wasteful number, since it uses less digits than its factorization.

28927542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1693 (or 1686 counting only the distinct ones).

The product of its digits is 80640, while the sum is 39.

The square root of 28927542 is about 5378.4330431827. The cubic root of 28927542 is about 306.9755910807.

The spelling of 28927542 in words is "twenty-eight million, nine hundred twenty-seven thousand, five hundred forty-two".