1980224 has 14 divisors (see below), whose sum is σ = 3929634. Its totient is φ = 990080.

The previous prime is 1980221. The next prime is 1980227. The reversal of 1980224 is 4220891.

It is an interprime number because it is at equal distance from previous prime (1980221) and next prime (1980227).

It can be written as a sum of positive squares in only one way, i.e., 1517824 + 462400 = 1232^2 + 680^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1980193 and 1980202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1980221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15407 + ... + 15534.

2^1980224 is an apocalyptic number.

It is an amenable number.

1980224 is a deficient number, since it is larger than the sum of its proper divisors (1949410).

1980224 is an equidigital number, since it uses as much as digits as its factorization.

1980224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30953 (or 30943 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 1980224 is about 1407.2043206301. The cubic root of 1980224 is about 125.5754587128.

The spelling of 1980224 in words is "one million, nine hundred eighty thousand, two hundred twenty-four".