1941940 has 96 divisors (see below), whose sum is σ = 5531904. Its totient is φ = 552960.

The previous prime is 1941937. The next prime is 1941941. The reversal of 1941940 is 491491.

It is a super-2 number, since 2×1941940² = 7542261927200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 1941899 and 1941908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1941941) 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 31 ways as a sum of consecutive naturals, for example, 19972 + ... + 20068.

It is an arithmetic number, because the mean of its divisors is an integer number (57624).

2^1941940 is an apocalyptic number.

1941940 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 1941940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2765952).

1941940 is an abundant number, since it is smaller than the sum of its proper divisors (3589964).

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

1941940 is a wasteful number, since it uses less digits than its factorization.

1941940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137 (or 135 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 1941940 is about 1393.5350731144. The cubic root of 1941940 is about 124.7609297214.

Adding to 1941940 its product of nonzero digits (1296), we get a square (1943236 = 1394²).

The spelling of 1941940 in words is "one million, nine hundred forty-one thousand, nine hundred forty".