2115738 has 12 divisors (see below), whose sum is σ = 4584138. Its totient is φ = 705240.

The previous prime is 2115727. The next prime is 2115749. The reversal of 2115738 is 8375112.

It is an interprime number because it is at equal distance from previous prime (2115727) and next prime (2115749).

It can be written as a sum of positive squares in only one way, i.e., 2082249 + 33489 = 1443^2 + 183^2 .

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 58753 + ... + 58788.

2^2115738 is an apocalyptic number.

2115738 is an abundant number, since it is smaller than the sum of its proper divisors (2468400).

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

2115738 is a wasteful number, since it uses less digits than its factorization.

2115738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117549 (or 117546 counting only the distinct ones).

The product of its digits is 1680, while the sum is 27.

The square root of 2115738 is about 1454.5576647215. The cubic root of 2115738 is about 128.3770215380.

The spelling of 2115738 in words is "two million, one hundred fifteen thousand, seven hundred thirty-eight".