20293869 has 24 divisors (see below), whose sum is σ = 29177280. Its totient is φ = 12542464.

The previous prime is 20293853. The next prime is 20293873. The reversal of 20293869 is 96839202.

It is not a de Polignac number, because 20293869 - 2⁴ = 20293853 is a prime.

It is a super-2 number, since 2×20293869² = 823682237978322, which contains 22 as substring.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20293849) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 77032 + ... + 77294.

It is an arithmetic number, because the mean of its divisors is an integer number (1215720).

Almost surely, 2^20293869 is an apocalyptic number.

It is an amenable number.

20293869 is a deficient number, since it is larger than the sum of its proper divisors (8883411).

20293869 is a wasteful number, since it uses less digits than its factorization.

20293869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389 (or 372 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 20293869 is about 4504.8716962861. The cubic root of 20293869 is about 272.7647747722.

The spelling of 20293869 in words is "twenty million, two hundred ninety-three thousand, eight hundred sixty-nine".