20340771 has 8 divisors (see below), whose sum is σ = 29586624. Its totient is φ = 12327720.

The previous prime is 20340751. The next prime is 20340799. The reversal of 20340771 is 17704302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20340771 - 2⁵ = 20340739 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20340751) 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, 308161 + ... + 308226.

It is an arithmetic number, because the mean of its divisors is an integer number (3698328).

Almost surely, 2^20340771 is an apocalyptic number.

20340771 is a deficient number, since it is larger than the sum of its proper divisors (9245853).

20340771 is a wasteful number, since it uses less digits than its factorization.

20340771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 616401.

The product of its (nonzero) digits is 1176, while the sum is 24.

The square root of 20340771 is about 4510.0743896304. The cubic root of 20340771 is about 272.9747457485.

The spelling of 20340771 in words is "twenty million, three hundred forty thousand, seven hundred seventy-one".