2989540 has 48 divisors (see below), whose sum is σ = 6717312. Its totient is φ = 1115136.

The previous prime is 2989537. The next prime is 2989541. The reversal of 2989540 is 459892.

It is a self number, because there is not a number n which added to its sum of digits gives 2989540.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2989541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30772 + ... + 30868.

It is an arithmetic number, because the mean of its divisors is an integer number (139944).

2^2989540 is an apocalyptic number.

2989540 is a gapful number since it is divisible by the number (20) 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 2989540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3358656).

2989540 is an abundant number, since it is smaller than the sum of its proper divisors (3727772).

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

2989540 is a wasteful number, since it uses less digits than its factorization.

2989540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196 (or 194 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 2989540 is about 1729.0286290284. The cubic root of 2989540 is about 144.0571403891.

It can be divided in two parts, 298 and 9540, that multiplied together give a triangular number (2842920 = T₂₃₈₄).

The spelling of 2989540 in words is "two million, nine hundred eighty-nine thousand, five hundred forty".