1977224 has 16 divisors (see below), whose sum is σ = 3750300. Its totient is φ = 977152.

The previous prime is 1977223. The next prime is 1977233. The reversal of 1977224 is 4227791.

1977224 is digitally balanced in base 5, 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 1737124 + 240100 = 1318^2 + 490^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1977223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 677 + ... + 2100.

2^1977224 is an apocalyptic number.

It is an amenable number.

1977224 is a deficient number, since it is larger than the sum of its proper divisors (1773076).

1977224 is a wasteful number, since it uses less digits than its factorization.

1977224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2872 (or 2868 counting only the distinct ones).

The product of its digits is 7056, while the sum is 32.

The square root of 1977224 is about 1406.1379733156. The cubic root of 1977224 is about 125.5120118871.

The spelling of 1977224 in words is "one million, nine hundred seventy-seven thousand, two hundred twenty-four".