20072718 has 32 divisors (see below), whose sum is σ = 44755200. Its totient is φ = 6668568.

The previous prime is 20072711. The next prime is 20072729. The reversal of 20072718 is 81727002.

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 = 20072691 and 20072700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20072711) 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, 26793 + ... + 27531.

It is an arithmetic number, because the mean of its divisors is an integer number (1398600).

Almost surely, 2^20072718 is an apocalyptic number.

20072718 is an abundant number, since it is smaller than the sum of its proper divisors (24682482).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20072718 is a wasteful number, since it uses less digits than its factorization.

20072718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1253 (or 1247 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 27.

The square root of 20072718 is about 4480.2586978879. The cubic root of 20072718 is about 271.7703421192.

The spelling of 20072718 in words is "twenty million, seventy-two thousand, seven hundred eighteen".