20719343 has 12 divisors (see below), whose sum is σ = 22097880. Its totient is φ = 19418256.

The previous prime is 20719337. The next prime is 20719357. The reversal of 20719343 is 34391702.

It is not a de Polignac number, because 20719343 - 2⁸ = 20719087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20719313) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27668 + ... + 28406.

It is an arithmetic number, because the mean of its divisors is an integer number (1841490).

Almost surely, 2^20719343 is an apocalyptic number.

20719343 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

20719343 is a deficient number, since it is larger than the sum of its proper divisors (1378537).

20719343 is an equidigital number, since it uses as much as digits as its factorization.

20719343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 838 (or 815 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 29.

The square root of 20719343 is about 4551.8505028175. The cubic root of 20719343 is about 274.6578356010.

It can be divided in two parts, 207 and 19343, that multiplied together give a square (4004001 = 2001²).

The spelling of 20719343 in words is "twenty million, seven hundred nineteen thousand, three hundred forty-three".