2151036 has 36 divisors (see below), whose sum is σ = 5641272. Its totient is φ = 716688.

The previous prime is 2151031. The next prime is 2151073. The reversal of 2151036 is 6301512.

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 (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2151031) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 135 + ... + 2078.

It is an arithmetic number, because the mean of its divisors is an integer number (156702).

2^2151036 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 2151036, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2820636).

2151036 is an abundant number, since it is smaller than the sum of its proper divisors (3490236).

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

2151036 is a wasteful number, since it uses less digits than its factorization.

2151036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2232 (or 2218 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 2151036 is about 1466.6410603825. The cubic root of 2151036 is about 129.0870153857.

Adding to 2151036 its reverse (6301512), we get a palindrome (8452548).

The spelling of 2151036 in words is "two million, one hundred fifty-one thousand, thirty-six".