28774357 has 8 divisors (see below), whose sum is σ = 30389184. Its totient is φ = 27189888.

The previous prime is 28774313. The next prime is 28774363. The reversal of 28774357 is 75347782.

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

It is a cyclic number.

It is not a de Polignac number, because 28774357 - 2¹⁵ = 28741589 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 (28774397) 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, 5628 + ... + 9445.

It is an arithmetic number, because the mean of its divisors is an integer number (3798648).

Almost surely, 2^28774357 is an apocalyptic number.

It is an amenable number.

28774357 is a deficient number, since it is larger than the sum of its proper divisors (1614827).

28774357 is a wasteful number, since it uses less digits than its factorization.

28774357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15179.

The product of its digits is 329280, while the sum is 43.

The square root of 28774357 is about 5364.1734684851. The cubic root of 28774357 is about 306.4327715324.

The spelling of 28774357 in words is "twenty-eight million, seven hundred seventy-four thousand, three hundred fifty-seven".