20343884 has 12 divisors (see below), whose sum is σ = 38838408. Its totient is φ = 9247200.

The previous prime is 20343871. The next prime is 20343893. The reversal of 20343884 is 48834302.

It is a self number, because there is not a number n which added to its sum of digits gives 20343884.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 231137 + ... + 231224.

It is an arithmetic number, because the mean of its divisors is an integer number (3236534).

Almost surely, 2^20343884 is an apocalyptic number.

It is an amenable number.

20343884 is a deficient number, since it is larger than the sum of its proper divisors (18494524).

20343884 is a wasteful number, since it uses less digits than its factorization.

20343884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 462376 (or 462374 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 32.

The square root of 20343884 is about 4510.4194926858. The cubic root of 20343884 is about 272.9886706064.

The spelling of 20343884 in words is "twenty million, three hundred forty-three thousand, eight hundred eighty-four".