20481607 has 8 divisors (see below), whose sum is σ = 21196800. Its totient is φ = 19769880.

The previous prime is 20481599. The next prime is 20481623. The reversal of 20481607 is 70618402.

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 20481607 - 2³ = 20481599 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 (20481667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18018 + ... + 19120.

It is an arithmetic number, because the mean of its divisors is an integer number (2649600).

Almost surely, 2^20481607 is an apocalyptic number.

20481607 is a deficient number, since it is larger than the sum of its proper divisors (715193).

20481607 is a wasteful number, since it uses less digits than its factorization.

20481607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1733.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 20481607 is about 4525.6609462044. The cubic root of 20481607 is about 273.6033073523.

It can be divided in two parts, 2048 and 1607, that added together give a triangular number (3655 = T₈₅).

The spelling of 20481607 in words is "twenty million, four hundred eighty-one thousand, six hundred seven".