20072518 has 8 divisors (see below), whose sum is σ = 30521448. Its totient is φ = 9898704.

The previous prime is 20072513. The next prime is 20072519. The reversal of 20072518 is 81527002.

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

It is a junction number, because it is equal to n+sod(n) for n = 20072492 and 20072501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20072513) 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, 68596 + ... + 68887.

It is an arithmetic number, because the mean of its divisors is an integer number (3815181).

Almost surely, 2^20072518 is an apocalyptic number.

20072518 is a deficient number, since it is larger than the sum of its proper divisors (10448930).

20072518 is a wasteful number, since it uses less digits than its factorization.

20072518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137558.

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 20072518 is about 4480.2363776926. The cubic root of 20072518 is about 271.7694394969.

The spelling of 20072518 in words is "twenty million, seventy-two thousand, five hundred eighteen".