20233445 has 16 divisors (see below), whose sum is σ = 26213760. Its totient is φ = 14946624.

The previous prime is 20233427. The next prime is 20233457. The reversal of 20233445 is 54433202.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20233445 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 20233445.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 302 + ... + 6368.

It is an arithmetic number, because the mean of its divisors is an integer number (1638360).

Almost surely, 2^20233445 is an apocalyptic number.

It is an amenable number.

20233445 is a deficient number, since it is larger than the sum of its proper divisors (5980315).

20233445 is a wasteful number, since it uses less digits than its factorization.

20233445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6124.

The product of its (nonzero) digits is 2880, while the sum is 23.

The square root of 20233445 is about 4498.1601794511. The cubic root of 20233445 is about 272.4937910658.

Adding to 20233445 its reverse (54433202), we get a palindrome (74666647).

The spelling of 20233445 in words is "twenty million, two hundred thirty-three thousand, four hundred forty-five".