20667914 has 8 divisors (see below), whose sum is σ = 31062720. Its totient is φ = 10313676.

The previous prime is 20667893. The next prime is 20667929. The reversal of 20667914 is 41976602.

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

It is a super-2 number, since 2×20667914² = 854325338222792, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8834 + ... + 10925.

It is an arithmetic number, because the mean of its divisors is an integer number (3882840).

Almost surely, 2^20667914 is an apocalyptic number.

20667914 is a deficient number, since it is larger than the sum of its proper divisors (10394806).

20667914 is a wasteful number, since it uses less digits than its factorization.

20667914 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20284.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 20667914 is about 4546.1977519681. The cubic root of 20667914 is about 274.4303978683.

The spelling of 20667914 in words is "twenty million, six hundred sixty-seven thousand, nine hundred fourteen".