20434912 has 24 divisors (see below), whose sum is σ = 40446000. Its totient is φ = 10162944.

The previous prime is 20434873. The next prime is 20434913. The reversal of 20434912 is 21943402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20434913) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4764 + ... + 7972.

It is an arithmetic number, because the mean of its divisors is an integer number (1685250).

Almost surely, 2^20434912 is an apocalyptic number.

It is an amenable number.

20434912 is a deficient number, since it is larger than the sum of its proper divisors (20011088).

20434912 is a wasteful number, since it uses less digits than its factorization.

20434912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3418 (or 3410 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 20434912 is about 4520.4990874902. The cubic root of 20434912 is about 273.3952242691.

The spelling of 20434912 in words is "twenty million, four hundred thirty-four thousand, nine hundred twelve".