20144307 has 8 divisors (see below), whose sum is σ = 26908560. Its totient is φ = 13404800.

The previous prime is 20144279. The next prime is 20144321. The reversal of 20144307 is 70344102.

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

It is a cyclic number.

It is not a de Polignac number, because 20144307 - 2⁸ = 20144051 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20144347) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4194 + ... + 7607.

It is an arithmetic number, because the mean of its divisors is an integer number (3363570).

Almost surely, 2^20144307 is an apocalyptic number.

20144307 is a deficient number, since it is larger than the sum of its proper divisors (6764253).

20144307 is a wasteful number, since it uses less digits than its factorization.

20144307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12373.

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 20144307 is about 4488.2409694668. The cubic root of 20144307 is about 272.0930468502.

Adding to 20144307 its reverse (70344102), we get a palindrome (90488409).

The spelling of 20144307 in words is "twenty million, one hundred forty-four thousand, three hundred seven".