20468615 has 8 divisors (see below), whose sum is σ = 24690768. Its totient is φ = 16289280.

The previous prime is 20468593. The next prime is 20468627. The reversal of 20468615 is 51686402.

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

It is a de Polignac number, because none of the positive numbers 2^k-20468615 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9641 + ... + 11570.

It is an arithmetic number, because the mean of its divisors is an integer number (3086346).

Almost surely, 2^20468615 is an apocalyptic number.

20468615 is a deficient number, since it is larger than the sum of its proper divisors (4222153).

20468615 is a wasteful number, since it uses less digits than its factorization.

20468615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21409.

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 20468615 is about 4524.2253480568. The cubic root of 20468615 is about 273.5454439559.

The spelling of 20468615 in words is "twenty million, four hundred sixty-eight thousand, six hundred fifteen".