28323333 has 12 divisors (see below), whose sum is σ = 41909868. Its totient is φ = 18421440.

The previous prime is 28323331. The next prime is 28323353. The reversal of 28323333 is 33332382.

28323333 is a `hidden beast` number, since 2 + 8 + 323 + 333 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 13089924 + 15233409 = 3618^2 + 3903^2 .

It is not a de Polignac number, because 28323333 - 2¹ = 28323331 is a prime.

It is a super-2 number, since 2×28323333² = 1604422384457778, which contains 22 as substring.

28323333 is a modest number, since divided by 3333 gives 2832 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 28323297 and 28323306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28323331) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38010 + ... + 38747.

It is an arithmetic number, because the mean of its divisors is an integer number (3492489).

Almost surely, 2^28323333 is an apocalyptic number.

It is an amenable number.

28323333 is a deficient number, since it is larger than the sum of its proper divisors (13586535).

28323333 is a wasteful number, since it uses less digits than its factorization.

28323333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76804 (or 76801 counting only the distinct ones).

The product of its digits is 7776, while the sum is 27.

The square root of 28323333 is about 5321.9670235731. The cubic root of 28323333 is about 304.8232712614.

The spelling of 28323333 in words is "twenty-eight million, three hundred twenty-three thousand, three hundred thirty-three".