20272517 has 8 divisors (see below), whose sum is σ = 21555072. Its totient is φ = 19000000.

The previous prime is 20272489. The next prime is 20272529. The reversal of 20272517 is 71527202.

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 20272517 - 2¹⁶ = 20206981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20272547) 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, 1892 + ... + 6642.

It is an arithmetic number, because the mean of its divisors is an integer number (2694384).

Almost surely, 2^20272517 is an apocalyptic number.

It is an amenable number.

20272517 is a deficient number, since it is larger than the sum of its proper divisors (1282555).

20272517 is a wasteful number, since it uses less digits than its factorization.

20272517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5019.

The product of its (nonzero) digits is 1960, while the sum is 26.

The square root of 20272517 is about 4502.5011937811. The cubic root of 20272517 is about 272.6690789203.

Adding to 20272517 its reverse (71527202), we get a palindrome (91799719).

The spelling of 20272517 in words is "twenty million, two hundred seventy-two thousand, five hundred seventeen".