28753919 has 8 divisors (see below), whose sum is σ = 30514320. Its totient is φ = 27001216.

The previous prime is 28753909. The next prime is 28753937. The reversal of 28753919 is 91935782.

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 28753919 - 2⁴ = 28753903 is a prime.

It is a super-2 number, since 2×28753919² = 1653575715717122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28753919.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28753909) 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, 6992 + ... + 10314.

It is an arithmetic number, because the mean of its divisors is an integer number (3814290).

Almost surely, 2^28753919 is an apocalyptic number.

28753919 is a deficient number, since it is larger than the sum of its proper divisors (1760401).

28753919 is a wasteful number, since it uses less digits than its factorization.

28753919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3849.

The product of its digits is 136080, while the sum is 44.

The square root of 28753919 is about 5362.2680835631. The cubic root of 28753919 is about 306.3602027938.

The spelling of 28753919 in words is "twenty-eight million, seven hundred fifty-three thousand, nine hundred nineteen".