28933797 has 16 divisors (see below), whose sum is σ = 39699968. Its totient is φ = 18733680.

The previous prime is 28933787. The next prime is 28933799. The reversal of 28933797 is 79733982.

It is not a de Polignac number, because 28933797 - 2⁶ = 28933733 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 (28933799) 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, 26688 + ... + 27750.

It is an arithmetic number, because the mean of its divisors is an integer number (2481248).

Almost surely, 2^28933797 is an apocalyptic number.

It is an amenable number.

28933797 is a deficient number, since it is larger than the sum of its proper divisors (10766171).

28933797 is a wasteful number, since it uses less digits than its factorization.

28933797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1320.

The product of its digits is 571536, while the sum is 48.

The square root of 28933797 is about 5379.0145008170. The cubic root of 28933797 is about 306.9977152550.

The spelling of 28933797 in words is "twenty-eight million, nine hundred thirty-three thousand, seven hundred ninety-seven".