20434768 has 20 divisors (see below), whose sum is σ = 40265280. Its totient is φ = 10043744.

The previous prime is 20434759. The next prime is 20434789. The reversal of 20434768 is 86743402.

It is a congruent number.

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, 9880 + ... + 11767.

It is an arithmetic number, because the mean of its divisors is an integer number (2013264).

Almost surely, 2^20434768 is an apocalyptic number.

It is an amenable number.

20434768 is a deficient number, since it is larger than the sum of its proper divisors (19830512).

20434768 is a wasteful number, since it uses less digits than its factorization.

20434768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21714 (or 21708 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 34.

The square root of 20434768 is about 4520.4831600173. The cubic root of 20434768 is about 273.3945820837.

The spelling of 20434768 in words is "twenty million, four hundred thirty-four thousand, seven hundred sixty-eight".