28492539 has 8 divisors (see below), whose sum is σ = 38034192. Its totient is φ = 18972960.

The previous prime is 28492537. The next prime is 28492543. The reversal of 28492539 is 93529482.

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

It is not a de Polignac number, because 28492539 - 2¹ = 28492537 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28492539.

It is not an unprimeable number, because it can be changed into a prime (28492537) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2224 + ... + 7869.

It is an arithmetic number, because the mean of its divisors is an integer number (4754274).

Almost surely, 2^28492539 is an apocalyptic number.

28492539 is a deficient number, since it is larger than the sum of its proper divisors (9541653).

28492539 is a wasteful number, since it uses less digits than its factorization.

28492539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11037.

The product of its digits is 155520, while the sum is 42.

The square root of 28492539 is about 5337.8402936019. The cubic root of 28492539 is about 305.4290798559.

The spelling of 28492539 in words is "twenty-eight million, four hundred ninety-two thousand, five hundred thirty-nine".