20045234 has 8 divisors (see below), whose sum is σ = 32801328. Its totient is φ = 9111460.

The previous prime is 20045197. The next prime is 20045237. The reversal of 20045234 is 43254002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×20045234² = 803622812229512, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20045237) 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, 455552 + ... + 455595.

It is an arithmetic number, because the mean of its divisors is an integer number (4100166).

Almost surely, 2^20045234 is an apocalyptic number.

20045234 is a deficient number, since it is larger than the sum of its proper divisors (12756094).

20045234 is a wasteful number, since it uses less digits than its factorization.

20045234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 911160.

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 20045234 is about 4477.1904136411. The cubic root of 20045234 is about 271.6462475191.

Adding to 20045234 its reverse (43254002), we get a palindrome (63299236).

The spelling of 20045234 in words is "twenty million, forty-five thousand, two hundred thirty-four".