18856002 has 16 divisors (see below), whose sum is σ = 41140512. Its totient is φ = 5713920.

The previous prime is 18856001. The next prime is 18856027. The reversal of 18856002 is 20065881.

It is a super-2 number, since 2×18856002² = 711097622848008, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18856001) 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, 142783 + ... + 142914.

It is an arithmetic number, because the mean of its divisors is an integer number (2571282).

Almost surely, 2^18856002 is an apocalyptic number.

18856002 is an abundant number, since it is smaller than the sum of its proper divisors (22284510).

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

18856002 is a wasteful number, since it uses less digits than its factorization.

18856002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285713.

The product of its (nonzero) digits is 3840, while the sum is 30.

The square root of 18856002 is about 4342.3498246917. The cubic root of 18856002 is about 266.1643415073.

It can be divided in two parts, 1885 and 6002, that added together give a palindrome (7887).

The spelling of 18856002 in words is "eighteen million, eight hundred fifty-six thousand, two".