20743912 has 16 divisors (see below), whose sum is σ = 44451360. Its totient is φ = 8890224.

The previous prime is 20743901. The next prime is 20743949. The reversal of 20743912 is 21934702.

It is a Harshad number since it is a multiple of its sum of digits (28).

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, 185158 + ... + 185269.

It is an arithmetic number, because the mean of its divisors is an integer number (2778210).

Almost surely, 2^20743912 is an apocalyptic number.

It is an amenable number.

20743912 is an abundant number, since it is smaller than the sum of its proper divisors (23707448).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20743912 is a wasteful number, since it uses less digits than its factorization.

20743912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370440 (or 370436 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 20743912 is about 4554.5484957348. The cubic root of 20743912 is about 274.7663558185.

The spelling of 20743912 in words is "twenty million, seven hundred forty-three thousand, nine hundred twelve".