28769715 has 64 divisors (see below), whose sum is σ = 55977600. Its totient is φ = 14017536.

The previous prime is 28769693. The next prime is 28769731. The reversal of 28769715 is 51796782.

It is not a de Polignac number, because 28769715 - 2⁸ = 28769459 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 296547 + ... + 296643.

It is an arithmetic number, because the mean of its divisors is an integer number (874650).

Almost surely, 2^28769715 is an apocalyptic number.

28769715 is a deficient number, since it is larger than the sum of its proper divisors (27207885).

28769715 is an equidigital number, since it uses as much as digits as its factorization.

28769715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150 (or 118 counting only the distinct ones).

The product of its digits is 211680, while the sum is 45.

The square root of 28769715 is about 5363.7407655479. The cubic root of 28769715 is about 306.4162923061.

The spelling of 28769715 in words is "twenty-eight million, seven hundred sixty-nine thousand, seven hundred fifteen".