2861988 has 12 divisors (see below), whose sum is σ = 6678000. Its totient is φ = 953992.

The previous prime is 2861977. The next prime is 2862011. The reversal of 2861988 is 8891682.

2861988 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 119238 + ... + 119261.

It is an arithmetic number, because the mean of its divisors is an integer number (556500).

2^2861988 is an apocalyptic number.

It is an amenable number.

2861988 is an abundant number, since it is smaller than the sum of its proper divisors (3816012).

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

2861988 is a wasteful number, since it uses less digits than its factorization.

2861988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238506 (or 238504 counting only the distinct ones).

The product of its digits is 55296, while the sum is 42.

The square root of 2861988 is about 1691.7411149464. The cubic root of 2861988 is about 141.9785063018.

The spelling of 2861988 in words is "two million, eight hundred sixty-one thousand, nine hundred eighty-eight".