28943733 has 32 divisors (see below), whose sum is σ = 48030976. Its totient is φ = 15095808.

The previous prime is 28943701. The next prime is 28943749. The reversal of 28943733 is 33734982.

It is not a de Polignac number, because 28943733 - 2⁵ = 28943701 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a junction number, because it is equal to n+sod(n) for n = 28943691 and 28943700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28943753) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25935 + ... + 27027.

It is an arithmetic number, because the mean of its divisors is an integer number (1500968).

Almost surely, 2^28943733 is an apocalyptic number.

It is an amenable number.

28943733 is a deficient number, since it is larger than the sum of its proper divisors (19087243).

28943733 is a wasteful number, since it uses less digits than its factorization.

28943733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1213.

The product of its digits is 108864, while the sum is 39.

The square root of 28943733 is about 5379.9380107953. The cubic root of 28943733 is about 307.0328527126.

The spelling of 28943733 in words is "twenty-eight million, nine hundred forty-three thousand, seven hundred thirty-three".