2861908 has 24 divisors (see below), whose sum is σ = 5859392. Its totient is φ = 1197504.

The previous prime is 2861897. The next prime is 2861909. The reversal of 2861908 is 8091682.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2861909) 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, 16 + ... + 2392.

2^2861908 is an apocalyptic number.

2861908 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2861908, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2929696).

2861908 is an abundant number, since it is smaller than the sum of its proper divisors (2997484).

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

2861908 is a wasteful number, since it uses less digits than its factorization.

2861908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2431 (or 2429 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 34.

The square root of 2861908 is about 1691.7174705015. The cubic root of 2861908 is about 141.9771834001.

The spelling of 2861908 in words is "two million, eight hundred sixty-one thousand, nine hundred eight".