2221924 has 12 divisors (see below), whose sum is σ = 3993724. Its totient is φ = 1080864.

The previous prime is 2221909. The next prime is 2221931. The reversal of 2221924 is 4291222.

2221924 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 1822500 + 399424 = 1350^2 + 632^2 .

It is a hoax number, since the sum of its digits (22) coincides with the sum of the digits of its distinct prime factors.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 2221895 and 2221904.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7359 + ... + 7654.

2^2221924 is an apocalyptic number.

It is an amenable number.

2221924 is a deficient number, since it is larger than the sum of its proper divisors (1771800).

2221924 is a wasteful number, since it uses less digits than its factorization.

2221924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15054 (or 15052 counting only the distinct ones).

The product of its digits is 576, while the sum is 22.

The square root of 2221924 is about 1490.6119548695. The cubic root of 2221924 is about 130.4897502752.

The spelling of 2221924 in words is "two million, two hundred twenty-one thousand, nine hundred twenty-four".