20037869 has 8 divisors (see below), whose sum is σ = 21121560. Its totient is φ = 18980416.

The previous prime is 20037859. The next prime is 20037881. The reversal of 20037869 is 96873002.

It can be written as a sum of positive squares in 4 ways, for example, as 6568969 + 13468900 = 2563^2 + 3670^2 .

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 20037869 - 2²⁰ = 18989293 is a prime.

It is a super-2 number, since 2×20037869² = 803032388122322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20037859) 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, 4982 + ... + 8055.

It is an arithmetic number, because the mean of its divisors is an integer number (2640195).

Almost surely, 2^20037869 is an apocalyptic number.

20037869 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

20037869 is a deficient number, since it is larger than the sum of its proper divisors (1083691).

20037869 is a wasteful number, since it uses less digits than its factorization.

20037869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13119.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 20037869 is about 4476.3678356453. The cubic root of 20037869 is about 271.6129741120.

The spelling of 20037869 in words is "twenty million, thirty-seven thousand, eight hundred sixty-nine".