28926533 has 4 divisors (see below), whose sum is σ = 28937760. Its totient is φ = 28915308.

The previous prime is 28926517. The next prime is 28926539. The reversal of 28926533 is 33562982.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 28926533 - 2⁴ = 28926517 is a prime.

It is a super-2 number, since 2×28926533² = 1673488622800178, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28926539) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 398 + ... + 7616.

It is an arithmetic number, because the mean of its divisors is an integer number (7234440).

Almost surely, 2^28926533 is an apocalyptic number.

It is an amenable number.

28926533 is a deficient number, since it is larger than the sum of its proper divisors (11227).

28926533 is an equidigital number, since it uses as much as digits as its factorization.

28926533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11226.

The product of its digits is 77760, while the sum is 38.

The square root of 28926533 is about 5378.3392418106. The cubic root of 28926533 is about 306.9720219104.

The spelling of 28926533 in words is "twenty-eight million, nine hundred twenty-six thousand, five hundred thirty-three".