28953717 has 16 divisors (see below), whose sum is σ = 41885760. Its totient is φ = 17684352.

The previous prime is 28953713. The next prime is 28953733. The reversal of 28953717 is 71735982.

It is not a de Polignac number, because 28953717 - 2² = 28953713 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28953713) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2634 + ... + 8052.

It is an arithmetic number, because the mean of its divisors is an integer number (2617860).

Almost surely, 2^28953717 is an apocalyptic number.

It is an amenable number.

28953717 is a deficient number, since it is larger than the sum of its proper divisors (12932043).

28953717 is a wasteful number, since it uses less digits than its factorization.

28953717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5572.

The product of its digits is 105840, while the sum is 42.

The square root of 28953717 is about 5380.8658225234. The cubic root of 28953717 is about 307.0681518175.

The spelling of 28953717 in words is "twenty-eight million, nine hundred fifty-three thousand, seven hundred seventeen".