20711396 has 24 divisors (see below), whose sum is σ = 37933056. Its totient is φ = 9884480.

The previous prime is 20711381. The next prime is 20711399. The reversal of 20711396 is 69311702.

It is not an unprimeable number, because it can be changed into a prime (20711399) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6365 + ... + 9051.

It is an arithmetic number, because the mean of its divisors is an integer number (1580544).

Almost surely, 2^20711396 is an apocalyptic number.

It is an amenable number.

20711396 is a deficient number, since it is larger than the sum of its proper divisors (17221660).

20711396 is a wasteful number, since it uses less digits than its factorization.

20711396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2779 (or 2777 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 29.

The square root of 20711396 is about 4550.9774774217. The cubic root of 20711396 is about 274.6227156820.

The spelling of 20711396 in words is "twenty million, seven hundred eleven thousand, three hundred ninety-six".