2127690 has 48 divisors (see below), whose sum is σ = 5660928. Its totient is φ = 554208.

The previous prime is 2127689. The next prime is 2127691. The reversal of 2127690 is 967212.

It is an interprime number because it is at equal distance from previous prime (2127689) and next prime (2127691).

It is a super-2 number, since 2×2127690² = 9054129472200, which contains 22 as substring.

It is an Ulam number.

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (2127691) 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, 3979 + ... + 4481.

It is an arithmetic number, because the mean of its divisors is an integer number (117936).

2^2127690 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2127690, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2830464).

2127690 is an abundant number, since it is smaller than the sum of its proper divisors (3533238).

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

2127690 is a wasteful number, since it uses less digits than its factorization.

2127690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 563 (or 560 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 2127690 is about 1458.6603442886. The cubic root of 2127690 is about 128.6183056579.

The spelling of 2127690 in words is "two million, one hundred twenty-seven thousand, six hundred ninety".