1975220 has 48 divisors (see below), whose sum is σ = 4572288. Its totient is φ = 712320.

The previous prime is 1975201. The next prime is 1975223. The reversal of 1975220 is 225791.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a self number, because there is not a number n which added to its sum of digits gives 1975220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1975223) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 18407 + ... + 18513.

It is an arithmetic number, because the mean of its divisors is an integer number (95256).

2^1975220 is an apocalyptic number.

1975220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1975220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2286144).

1975220 is an abundant number, since it is smaller than the sum of its proper divisors (2597068).

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

1975220 is a wasteful number, since it uses less digits than its factorization.

1975220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200 (or 198 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 26.

The square root of 1975220 is about 1405.4252025633. The cubic root of 1975220 is about 125.4695936453.

The spelling of 1975220 in words is "one million, nine hundred seventy-five thousand, two hundred twenty".