1964340 has 72 divisors (see below), whose sum is σ = 6814080. Its totient is φ = 448704.

The previous prime is 1964323. The next prime is 1964363. The reversal of 1964340 is 434691.

1964340 is a `hidden beast` number, since 19 + 643 + 4 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 481 + ... + 2039.

It is an arithmetic number, because the mean of its divisors is an integer number (94640).

2^1964340 is an apocalyptic number.

1964340 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 1964340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3407040).

1964340 is an abundant number, since it is smaller than the sum of its proper divisors (4849740).

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

1964340 is a wasteful number, since it uses less digits than its factorization.

1964340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1581 (or 1576 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 1964340 is about 1401.5491429129. The cubic root of 1964340 is about 125.2387968513.

It can be divided in two parts, 19643 and 40, that added together give a 9-th power (19683 = 3⁹).

The spelling of 1964340 in words is "one million, nine hundred sixty-four thousand, three hundred forty".