20118465 has 24 divisors (see below), whose sum is σ = 34976448. Its totient is φ = 10697760.

The previous prime is 20118437. The next prime is 20118467. The reversal of 20118465 is 56481102.

It is not a de Polignac number, because 20118465 - 2⁵ = 20118433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20118467) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28770 + ... + 29460.

It is an arithmetic number, because the mean of its divisors is an integer number (1457352).

Almost surely, 2^20118465 is an apocalyptic number.

It is an amenable number.

20118465 is a deficient number, since it is larger than the sum of its proper divisors (14857983).

20118465 is a wasteful number, since it uses less digits than its factorization.

20118465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1349 (or 1346 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 20118465 is about 4485.3611894696. The cubic root of 20118465 is about 271.9766460990.

Adding to 20118465 its reverse (56481102), we get a palindrome (76599567).

The spelling of 20118465 in words is "twenty million, one hundred eighteen thousand, four hundred sixty-five".