28356542 has 8 divisors (see below), whose sum is σ = 42712032. Its totient is φ = 14119200.

The previous prime is 28356529. The next prime is 28356547. The reversal of 28356542 is 24565382.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28356547) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28934 + ... + 29897.

It is an arithmetic number, because the mean of its divisors is an integer number (5339004).

Almost surely, 2^28356542 is an apocalyptic number.

28356542 is a deficient number, since it is larger than the sum of its proper divisors (14355490).

28356542 is a wasteful number, since it uses less digits than its factorization.

28356542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59074.

The product of its digits is 57600, while the sum is 35.

The square root of 28356542 is about 5325.0861025903. The cubic root of 28356542 is about 304.9423594380.

The spelling of 28356542 in words is "twenty-eight million, three hundred fifty-six thousand, five hundred forty-two".