2001396236 has 48 divisors (see below), whose sum is σ = 4219488000. Its totient is φ = 811435968.

The previous prime is 2001396211. The next prime is 2001396259. The reversal of 2001396236 is 6326931002.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 437690 + ... + 442238.

It is an arithmetic number, because the mean of its divisors is an integer number (87906000).

Almost surely, 2^2001396236 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2001396236, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2109744000).

2001396236 is an abundant number, since it is smaller than the sum of its proper divisors (2218091764).

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

2001396236 is a wasteful number, since it uses less digits than its factorization.

2001396236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5406 (or 5404 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 32.

The square root of 2001396236 is about 44736.9672195155. The cubic root of 2001396236 is about 1260.2141728818.

The spelling of 2001396236 in words is "two billion, one million, three hundred ninety-six thousand, two hundred thirty-six".