20860486 has 4 divisors (see below), whose sum is σ = 31290732. Its totient is φ = 10430242.

The previous prime is 20860459. The next prime is 20860493. The reversal of 20860486 is 68406802.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5215120 + ... + 5215123.

It is an arithmetic number, because the mean of its divisors is an integer number (7822683).

Almost surely, 2^20860486 is an apocalyptic number.

20860486 is a deficient number, since it is larger than the sum of its proper divisors (10430246).

20860486 is a wasteful number, since it uses less digits than its factorization.

20860486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10430245.

The product of its (nonzero) digits is 18432, while the sum is 34.

The square root of 20860486 is about 4567.3281029503. The cubic root of 20860486 is about 275.2800936848.

The spelling of 20860486 in words is "twenty million, eight hundred sixty thousand, four hundred eighty-six".