20067869 has 4 divisors (see below), whose sum is σ = 20180160. Its totient is φ = 19955580.

The previous prime is 20067833. The next prime is 20067893. The reversal of 20067869 is 96876002.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 96876002 = 2 ⋅48438001.

It is a cyclic number.

It is not a de Polignac number, because 20067869 - 2⁸ = 20067613 is a prime.

It is a super-2 number, since 2×20067869² = 805438732402322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20067169) 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, 55877 + ... + 56234.

It is an arithmetic number, because the mean of its divisors is an integer number (5045040).

Almost surely, 2^20067869 is an apocalyptic number.

It is an amenable number.

20067869 is a deficient number, since it is larger than the sum of its proper divisors (112291).

20067869 is a wasteful number, since it uses less digits than its factorization.

20067869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112290.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 20067869 is about 4479.7175134153. The cubic root of 20067869 is about 271.7484563517.

The spelling of 20067869 in words is "twenty million, sixty-seven thousand, eight hundred sixty-nine".