1371996 has 36 divisors (see below), whose sum is σ = 3621072. Its totient is φ = 437184.

The previous prime is 1371991. The next prime is 1372027. The reversal of 1371996 is 6991731.

1371996 is a nontrivial binomial coefficient, being equal to C(1657, 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 self number, because there is not a number n which added to its sum of digits gives 1371996.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1371991) by changing a digit.

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, 1 + ... + 1656.

2^1371996 is an apocalyptic number.

1371996 is the 1656-th triangular number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1371996, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1810536).

1371996 is an abundant number, since it is smaller than the sum of its proper divisors (2249076).

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

1371996 is a wasteful number, since it uses less digits than its factorization.

1371996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1690 (or 1685 counting only the distinct ones).

The product of its digits is 10206, while the sum is 36.

The square root of 1371996 is about 1171.3223296770. The cubic root of 1371996 is about 111.1179656512.

The spelling of 1371996 in words is "one million, three hundred seventy-one thousand, nine hundred ninety-six".