20286071 has 8 divisors (see below), whose sum is σ = 21937104. Its totient is φ = 18648000.

The previous prime is 20286031. The next prime is 20286073. The reversal of 20286071 is 17068202.

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

It is a cyclic number.

It is not a de Polignac number, because 20286071 - 2¹⁴ = 20269687 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20286071.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20286073) 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, 155 + ... + 6371.

It is an arithmetic number, because the mean of its divisors is an integer number (2742138).

Almost surely, 2^20286071 is an apocalyptic number.

20286071 is a deficient number, since it is larger than the sum of its proper divisors (1651033).

20286071 is a wasteful number, since it uses less digits than its factorization.

20286071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6481.

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 20286071 is about 4504.0061056797. The cubic root of 20286071 is about 272.7298333127.

The spelling of 20286071 in words is "twenty million, two hundred eighty-six thousand, seventy-one".