1982220 has 24 divisors (see below), whose sum is σ = 5550384. Its totient is φ = 528576.

The previous prime is 1982219. The next prime is 1982263. The reversal of 1982220 is 222891.

It is a super-2 number, since 2×1982220² = 7858392256800, which contains 22 as substring.

It is a zygodrome in base 2.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16459 + ... + 16578.

It is an arithmetic number, because the mean of its divisors is an integer number (231266).

2^1982220 is an apocalyptic number.

1982220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1982220 is an abundant number, since it is smaller than the sum of its proper divisors (3568164).

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

1982220 is a wasteful number, since it uses less digits than its factorization.

1982220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33049 (or 33047 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 1982220 is about 1407.9133496064. The cubic root of 1982220 is about 125.6176365081.

The spelling of 1982220 in words is "one million, nine hundred eighty-two thousand, two hundred twenty".