2115204 has 72 divisors (see below), whose sum is σ = 6148800. Its totient is φ = 554112.

The previous prime is 2115203. The next prime is 2115221. The reversal of 2115204 is 4025112.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2115203) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14122 + ... + 14270.

It is an arithmetic number, because the mean of its divisors is an integer number (85400).

2^2115204 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 2115204, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3074400).

2115204 is an abundant number, since it is smaller than the sum of its proper divisors (4033596).

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

2115204 is a wasteful number, since it uses less digits than its factorization.

2115204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189 (or 174 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 2115204 is about 1454.3740921785. The cubic root of 2115204 is about 128.3662200907.

It can be divided in two parts, 21 and 15204, that added together give a triangular number (15225 = T₁₇₄).

The spelling of 2115204 in words is "two million, one hundred fifteen thousand, two hundred four".