2151936 has 60 divisors (see below), whose sum is σ = 6223932. Its totient is φ = 715776.

The previous prime is 2151923. The next prime is 2151943. The reversal of 2151936 is 6391512.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4375 + ... + 4841.

2^2151936 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 2151936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3111966).

2151936 is an abundant number, since it is smaller than the sum of its proper divisors (4071996).

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

2151936 is an equidigital number, since it uses as much as digits as its factorization.

2151936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 491 (or 472 counting only the distinct ones).

The product of its digits is 1620, while the sum is 27.

The square root of 2151936 is about 1466.9478518339. The cubic root of 2151936 is about 129.1050163419.

The spelling of 2151936 in words is "two million, one hundred fifty-one thousand, nine hundred thirty-six".