28824357 has 8 divisors (see below), whose sum is σ = 38632384. Its totient is φ = 19116288.

The previous prime is 28824337. The next prime is 28824371. The reversal of 28824357 is 75342882.

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

It is not a de Polignac number, because 28824357 - 2¹¹ = 28822309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28824307) 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, 24313 + ... + 25470.

It is an arithmetic number, because the mean of its divisors is an integer number (4829048).

Almost surely, 2^28824357 is an apocalyptic number.

It is an amenable number.

28824357 is a deficient number, since it is larger than the sum of its proper divisors (9808027).

28824357 is a wasteful number, since it uses less digits than its factorization.

28824357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49979.

The product of its digits is 107520, while the sum is 39.

The square root of 28824357 is about 5368.8319958814. The cubic root of 28824357 is about 306.6101606402.

The spelling of 28824357 in words is "twenty-eight million, eight hundred twenty-four thousand, three hundred fifty-seven".