20434711 has 4 divisors (see below), whose sum is σ = 22292424. Its totient is φ = 18577000.

The previous prime is 20434703. The next prime is 20434759. The reversal of 20434711 is 11743402.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20434711 - 2³ = 20434703 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20434411) 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, 928840 + ... + 928861.

It is an arithmetic number, because the mean of its divisors is an integer number (5573106).

Almost surely, 2^20434711 is an apocalyptic number.

20434711 is a deficient number, since it is larger than the sum of its proper divisors (1857713).

20434711 is a wasteful number, since it uses less digits than its factorization.

20434711 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1857712.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 20434711 is about 4520.4768553771. The cubic root of 20434711 is about 273.3943278845.

The spelling of 20434711 in words is "twenty million, four hundred thirty-four thousand, seven hundred eleven".