1996740 has 36 divisors (see below), whose sum is σ = 6057324. Its totient is φ = 532416.

The previous prime is 1996739. The next prime is 1996751. The reversal of 1996740 is 476991.

It can be written as a sum of positive squares in 2 ways, for example, as 1218816 + 777924 = 1104^2 + 882^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1996695 and 1996704.

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 11 ways as a sum of consecutive naturals, for example, 5367 + ... + 5726.

It is an arithmetic number, because the mean of its divisors is an integer number (168259).

2^1996740 is an apocalyptic number.

1996740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1996740 is an abundant number, since it is smaller than the sum of its proper divisors (4060584).

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

1996740 is a wasteful number, since it uses less digits than its factorization.

1996740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11108 (or 11103 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 1996740 is about 1413.0605082586. The cubic root of 1996740 is about 125.9236120511.

The spelling of 1996740 in words is "one million, nine hundred ninety-six thousand, seven hundred forty".