20656119 has 8 divisors (see below), whose sum is σ = 30045312. Its totient is φ = 12518840.

The previous prime is 20656117. The next prime is 20656121. The reversal of 20656119 is 91165602.

It is an interprime number because it is at equal distance from previous prime (20656117) and next prime (20656121).

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 20656119 - 2¹ = 20656117 is a prime.

It is a super-2 number, since 2×20656119² = 853350504284322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20656117) 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, 312939 + ... + 313004.

It is an arithmetic number, because the mean of its divisors is an integer number (3755664).

Almost surely, 2^20656119 is an apocalyptic number.

20656119 is a deficient number, since it is larger than the sum of its proper divisors (9389193).

20656119 is a wasteful number, since it uses less digits than its factorization.

20656119 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 625957.

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 20656119 is about 4544.9003289401. The cubic root of 20656119 is about 274.3781829149.

The spelling of 20656119 in words is "twenty million, six hundred fifty-six thousand, one hundred nineteen".