20709411 has 16 divisors (see below), whose sum is σ = 29168640. Its totient is φ = 13033440.

The previous prime is 20709401. The next prime is 20709431. The reversal of 20709411 is 11490702.

It is not a de Polignac number, because 20709411 - 2⁶ = 20709347 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20709401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23566 + ... + 24428.

It is an arithmetic number, because the mean of its divisors is an integer number (1823040).

Almost surely, 2^20709411 is an apocalyptic number.

20709411 is a deficient number, since it is larger than the sum of its proper divisors (8459229).

20709411 is a wasteful number, since it uses less digits than its factorization.

20709411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1306.

The product of its (nonzero) digits is 504, while the sum is 24.

The square root of 20709411 is about 4550.7593871792. The cubic root of 20709411 is about 274.6139420338.

The spelling of 20709411 in words is "twenty million, seven hundred nine thousand, four hundred eleven".