2115750 has 128 divisors (see below), whose sum is σ = 6709248. Its totient is φ = 432000.

The previous prime is 2115749. The next prime is 2115761. The reversal of 2115750 is 575112.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

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 63 ways as a sum of consecutive naturals, for example, 68235 + ... + 68265.

It is an arithmetic number, because the mean of its divisors is an integer number (52416).

2^2115750 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2115750, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3354624).

2115750 is an abundant number, since it is smaller than the sum of its proper divisors (4593498).

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

2115750 is a wasteful number, since it uses less digits than its factorization.

2115750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71 (or 61 counting only the distinct ones).

The product of its (nonzero) digits is 350, while the sum is 21.

The square root of 2115750 is about 1454.5617896810. The cubic root of 2115750 is about 128.3772642463.

The spelling of 2115750 in words is "two million, one hundred fifteen thousand, seven hundred fifty".