2991384 has 64 divisors (see below), whose sum is σ = 9072000. Its totient is φ = 905760.

The previous prime is 2991377. The next prime is 2991397. The reversal of 2991384 is 4831992.

It is a super-3 number, since 3×2991384³ = 80304106438473933312, which contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1747 + ... + 3005.

It is an arithmetic number, because the mean of its divisors is an integer number (141750).

2^2991384 is an apocalyptic number.

2991384 is a gapful number since it is divisible by the number (24) 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 2991384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4536000).

2991384 is an abundant number, since it is smaller than the sum of its proper divisors (6080616).

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

2991384 is a wasteful number, since it uses less digits than its factorization.

2991384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1285 (or 1275 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 2991384 is about 1729.5617942126. The cubic root of 2991384 is about 144.0867532803.

It can be divided in two parts, 2991 and 384, that added together give a cube (3375 = 15³).

The spelling of 2991384 in words is "two million, nine hundred ninety-one thousand, three hundred eighty-four".