2987838 has 48 divisors (see below), whose sum is σ = 7727616. Its totient is φ = 815760.

The previous prime is 2987827. The next prime is 2987839. The reversal of 2987838 is 8387892.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2987793 and 2987802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2987839) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2383 + ... + 3413.

It is an arithmetic number, because the mean of its divisors is an integer number (160992).

2^2987838 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2987838, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3863808).

2987838 is an abundant number, since it is smaller than the sum of its proper divisors (4739778).

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

2987838 is a wasteful number, since it uses less digits than its factorization.

2987838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1069 (or 1066 counting only the distinct ones).

The product of its digits is 193536, while the sum is 45.

The square root of 2987838 is about 1728.5363750873. The cubic root of 2987838 is about 144.0297970746.

The spelling of 2987838 in words is "two million, nine hundred eighty-seven thousand, eight hundred thirty-eight".