2115700 has 18 divisors (see below), whose sum is σ = 4591286. Its totient is φ = 846240.

The previous prime is 2115689. The next prime is 2115703. The reversal of 2115700 is 75112.

It can be written as a sum of positive squares in 3 ways, for example, as 7396 + 2108304 = 86^2 + 1452^2 .

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2115703) by changing a digit.

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, 10479 + ... + 10678.

2^2115700 is an apocalyptic number.

2115700 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2115700 is an abundant number, since it is smaller than the sum of its proper divisors (2475586).

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

2115700 is a wasteful number, since it uses less digits than its factorization.

2115700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21171 (or 21164 counting only the distinct ones).

The product of its (nonzero) digits is 70, while the sum is 16.

The square root of 2115700 is about 1454.5446022725. The cubic root of 2115700 is about 128.3762529558.

The spelling of 2115700 in words is "two million, one hundred fifteen thousand, seven hundred".