45640233 has 16 divisors (see below), whose sum is σ = 68107200. Its totient is φ = 30205440.

The previous prime is 45640219. The next prime is 45640241. The reversal of 45640233 is 33204654.

It is not a de Polignac number, because 45640233 - 2⁵ = 45640201 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 45640197 and 45640206.

It is not an unprimeable number, because it can be changed into a prime (45640253) 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, 2328 + ... + 9833.

It is an arithmetic number, because the mean of its divisors is an integer number (4256700).

Almost surely, 2^45640233 is an apocalyptic number.

It is an amenable number.

45640233 is a deficient number, since it is larger than the sum of its proper divisors (22466967).

45640233 is a wasteful number, since it uses less digits than its factorization.

45640233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12309 (or 12303 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 27.

The square root of 45640233 is about 6755.7555461991. The cubic root of 45640233 is about 357.3682380749.

Adding to 45640233 its reverse (33204654), we get a palindrome (78844887).

The spelling of 45640233 in words is "forty-five million, six hundred forty thousand, two hundred thirty-three".