28963233 has 48 divisors (see below), whose sum is σ = 48222720. Its totient is φ = 16612992.

The previous prime is 28963213. The next prime is 28963237. The reversal of 28963233 is 33236982.

It is not a de Polignac number, because 28963233 - 2⁶ = 28963169 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (28963237) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 126363 + ... + 126591.

It is an arithmetic number, because the mean of its divisors is an integer number (1004640).

Almost surely, 2^28963233 is an apocalyptic number.

28963233 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

28963233 is a deficient number, since it is larger than the sum of its proper divisors (19259487).

28963233 is a wasteful number, since it uses less digits than its factorization.

28963233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318 (or 315 counting only the distinct ones).

The product of its digits is 46656, while the sum is 36.

The square root of 28963233 is about 5381.7499941933. The cubic root of 28963233 is about 307.1017887246.

The spelling of 28963233 in words is "twenty-eight million, nine hundred sixty-three thousand, two hundred thirty-three".