2157336 has 72 divisors (see below), whose sum is σ = 6240780. Its totient is φ = 673056.

The previous prime is 2157329. The next prime is 2157341. The reversal of 2157336 is 6337512.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 25951 + ... + 26033.

2^2157336 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 2157336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3120390).

2157336 is an abundant number, since it is smaller than the sum of its proper divisors (4083444).

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

2157336 is a wasteful number, since it uses less digits than its factorization.

2157336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133 (or 107 counting only the distinct ones).

The product of its digits is 3780, while the sum is 27.

The square root of 2157336 is about 1468.7872548467. The cubic root of 2157336 is about 129.2129168170.

It can be divided in two parts, 21573 and 36, that added together give a square (21609 = 147²).

The spelling of 2157336 in words is "two million, one hundred fifty-seven thousand, three hundred thirty-six".