2981224 has 8 divisors (see below), whose sum is σ = 5589810. Its totient is φ = 1490608.

The previous prime is 2981221. The next prime is 2981243. The reversal of 2981224 is 4221892.

It can be written as a sum of positive squares in only one way, i.e., 2829124 + 152100 = 1682^2 + 390^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 2981192 and 2981201.

It is not an unprimeable number, because it can be changed into a prime (2981221) 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 as a sum of consecutive naturals, namely, 186319 + ... + 186334.

2^2981224 is an apocalyptic number.

It is an amenable number.

2981224 is a deficient number, since it is larger than the sum of its proper divisors (2608586).

2981224 is a wasteful number, since it uses less digits than its factorization.

2981224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372659 (or 372655 counting only the distinct ones).

The product of its digits is 2304, while the sum is 28.

The square root of 2981224 is about 1726.6221358479. The cubic root of 2981224 is about 143.9234418150.

The spelling of 2981224 in words is "two million, nine hundred eighty-one thousand, two hundred twenty-four".