20955874 has 8 divisors (see below), whose sum is σ = 31482540. Its totient is φ = 10461696.

The previous prime is 20955871. The next prime is 20955877. The reversal of 20955874 is 47855902.

20955874 is nontrivially palindromic in base 14.

It is an interprime number because it is at equal distance from previous prime (20955871) and next prime (20955877).

It can be written as a sum of positive squares in 2 ways, for example, as 20475625 + 480249 = 4525^2 + 693^2 .

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

It is not an unprimeable number, because it can be changed into a prime (20955871) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6439 + ... + 9130.

Almost surely, 2^20955874 is an apocalyptic number.

20955874 is a deficient number, since it is larger than the sum of its proper divisors (10526666).

20955874 is a wasteful number, since it uses less digits than its factorization.

20955874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16244.

The product of its (nonzero) digits is 100800, while the sum is 40.

The square root of 20955874 is about 4577.7586218585. The cubic root of 20955874 is about 275.6990435804.

The spelling of 20955874 in words is "twenty million, nine hundred fifty-five thousand, eight hundred seventy-four".