20858483 has 4 divisors (see below), whose sum is σ = 21343608. Its totient is φ = 20373360.

The previous prime is 20858477. The next prime is 20858489. The reversal of 20858483 is 38485802.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 38485802 = 2 ⋅19242901.

It is an interprime number because it is at equal distance from previous prime (20858477) and next prime (20858489).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20858483 is a prime.

It is a super-2 number, since 2×20858483² = 870152626122578, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20858489) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 242498 + ... + 242583.

It is an arithmetic number, because the mean of its divisors is an integer number (5335902).

Almost surely, 2^20858483 is an apocalyptic number.

20858483 is a deficient number, since it is larger than the sum of its proper divisors (485125).

20858483 is an equidigital number, since it uses as much as digits as its factorization.

20858483 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 485124.

The product of its (nonzero) digits is 61440, while the sum is 38.

The square root of 20858483 is about 4567.1088228769. The cubic root of 20858483 is about 275.2712827096.

The spelling of 20858483 in words is "twenty million, eight hundred fifty-eight thousand, four hundred eighty-three".