2987790 has 64 divisors (see below), whose sum is σ = 7934976. Its totient is φ = 715392.

The previous prime is 2987773. The next prime is 2987791. The reversal of 2987790 is 977892.

2987790 is a nontrivial binomial coefficient, being equal to C(2445, 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2987791) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18249 + ... + 18411.

It is an arithmetic number, because the mean of its divisors is an integer number (123984).

2^2987790 is an apocalyptic number.

2987790 is the 2444-th triangular number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2987790, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3967488).

2987790 is an abundant number, since it is smaller than the sum of its proper divisors (4947186).

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

2987790 is a wasteful number, since it uses less digits than its factorization.

2987790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233.

The product of its (nonzero) digits is 63504, while the sum is 42.

The square root of 2987790 is about 1728.5224904525. The cubic root of 2987790 is about 144.0290257847.

The spelling of 2987790 in words is "two million, nine hundred eighty-seven thousand, seven hundred ninety".