20074869 has 6 divisors (see below), whose sum is σ = 28997046. Its totient is φ = 13383240.

The previous prime is 20074843. The next prime is 20074907. The reversal of 20074869 is 96847002.

It can be written as a sum of positive squares in only one way, i.e., 10692900 + 9381969 = 3270^2 + 3063^2 .

It is not a de Polignac number, because 20074869 - 2⁹ = 20074357 is a prime.

It is a super-2 number, since 2×20074869² = 806000730734322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20074169) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1115262 + ... + 1115279.

It is an arithmetic number, because the mean of its divisors is an integer number (4832841).

Almost surely, 2^20074869 is an apocalyptic number.

It is an amenable number.

20074869 is a deficient number, since it is larger than the sum of its proper divisors (8922177).

20074869 is a wasteful number, since it uses less digits than its factorization.

20074869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2230547 (or 2230544 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 20074869 is about 4480.4987445596. The cubic root of 20074869 is about 271.7800494431.

The spelling of 20074869 in words is "twenty million, seventy-four thousand, eight hundred sixty-nine".