20486843 has 8 divisors (see below), whose sum is σ = 22225728. Its totient is φ = 18771264.

The previous prime is 20486831. The next prime is 20486861. The reversal of 20486843 is 34868402.

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 20486843 - 2¹⁴ = 20470459 is a prime.

It is a super-2 number, since 2×20486843² = 839421472213298, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (20486743) 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, 3971 + ... + 7532.

It is an arithmetic number, because the mean of its divisors is an integer number (2778216).

Almost surely, 2^20486843 is an apocalyptic number.

20486843 is a deficient number, since it is larger than the sum of its proper divisors (1738885).

20486843 is a wasteful number, since it uses less digits than its factorization.

20486843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11653.

The product of its (nonzero) digits is 36864, while the sum is 35.

The square root of 20486843 is about 4526.2393882781. The cubic root of 20486843 is about 273.6266203807.

The spelling of 20486843 in words is "twenty million, four hundred eighty-six thousand, eight hundred forty-three".