20860002 has 24 divisors (see below), whose sum is σ = 45312384. Its totient is φ = 6935544.

The previous prime is 20860001. The next prime is 20860027. The reversal of 20860002 is 20006802.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20860001) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7083 + ... + 9585.

It is an arithmetic number, because the mean of its divisors is an integer number (1888016).

Almost surely, 2^20860002 is an apocalyptic number.

20860002 is an abundant number, since it is smaller than the sum of its proper divisors (24452382).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20860002 is a wasteful number, since it uses less digits than its factorization.

20860002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2974 (or 2971 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 20860002 is about 4567.2751176166. The cubic root of 20860002 is about 275.2779646741.

Adding to 20860002 its reverse (20006802), we get a palindrome (40866804).

The spelling of 20860002 in words is "twenty million, eight hundred sixty thousand, two".