2981870 has 8 divisors (see below), whose sum is σ = 5367384. Its totient is φ = 1192744.

The previous prime is 2981857. The next prime is 2981873. The reversal of 2981870 is 781892.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an alternating number because its digits alternate between even and odd.

It is a nialpdrome in base 12.

It is a self number, because there is not a number n which added to its sum of digits gives 2981870.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2981873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 149084 + ... + 149103.

It is an arithmetic number, because the mean of its divisors is an integer number (670923).

2^2981870 is an apocalyptic number.

2981870 is a deficient number, since it is larger than the sum of its proper divisors (2385514).

2981870 is a wasteful number, since it uses less digits than its factorization.

2981870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298194.

The product of its (nonzero) digits is 8064, while the sum is 35.

The square root of 2981870 is about 1726.8091961766. The cubic root of 2981870 is about 143.9338366315.

The spelling of 2981870 in words is "two million, nine hundred eighty-one thousand, eight hundred seventy".