20392071 has 8 divisors (see below), whose sum is σ = 31073664. Its totient is φ = 11652600.

The previous prime is 20392063. The next prime is 20392103. The reversal of 20392071 is 17029302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20392071 - 2³ = 20392063 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20392051) 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, 485505 + ... + 485546.

It is an arithmetic number, because the mean of its divisors is an integer number (3884208).

Almost surely, 2^20392071 is an apocalyptic number.

20392071 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

20392071 is a deficient number, since it is larger than the sum of its proper divisors (10681593).

20392071 is an equidigital number, since it uses as much as digits as its factorization.

20392071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 971061.

The product of its (nonzero) digits is 756, while the sum is 24.

The square root of 20392071 is about 4515.7580758938. The cubic root of 20392071 is about 273.2040364414.

The spelling of 20392071 in words is "twenty million, three hundred ninety-two thousand, seventy-one".