2211984 has 30 divisors (see below), whose sum is σ = 6190886. Its totient is φ = 737280.

The previous prime is 2211983. The next prime is 2211997. The reversal of 2211984 is 4891122.

It can be written as a sum of positive squares in only one way, i.e., 2073600 + 138384 = 1440^2 + 372^2 .

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

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2211983) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7537 + ... + 7824.

2^2211984 is an apocalyptic number.

2211984 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2211984 is an abundant number, since it is smaller than the sum of its proper divisors (3978902).

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

2211984 is a wasteful number, since it uses less digits than its factorization.

2211984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15375 (or 15366 counting only the distinct ones).

The product of its digits is 1152, while the sum is 27.

The square root of 2211984 is about 1487.2740164475. The cubic root of 2211984 is about 130.2948730535.

The spelling of 2211984 in words is "two million, two hundred eleven thousand, nine hundred eighty-four".