20077169 has 16 divisors (see below), whose sum is σ = 23552640. Its totient is φ = 16759680.

The previous prime is 20077163. The next prime is 20077171. The reversal of 20077169 is 96177002.

It is a de Polignac number, because none of the positive numbers 2^k-20077169 is a prime.

It is a super-2 number, since 2×20077169² = 806185430109122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20077163) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71309 + ... + 71589.

It is an arithmetic number, because the mean of its divisors is an integer number (1472040).

Almost surely, 2^20077169 is an apocalyptic number.

It is an amenable number.

20077169 is a deficient number, since it is larger than the sum of its proper divisors (3475471).

20077169 is a wasteful number, since it uses less digits than its factorization.

20077169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 520.

The product of its (nonzero) digits is 5292, while the sum is 32.

The square root of 20077169 is about 4480.7554050629. The cubic root of 20077169 is about 271.7904284273.

The spelling of 20077169 in words is "twenty million, seventy-seven thousand, one hundred sixty-nine".