2821690 has 16 divisors (see below), whose sum is σ = 5346720. Its totient is φ = 1069200.

The previous prime is 2821681. The next prime is 2821699. The reversal of 2821690 is 961282.

It is a happy number.

2821690 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2821681) and next prime (2821699).

It is a super-2 number, since 2×2821690² = 15923868912200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2821699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7236 + ... + 7615.

It is an arithmetic number, because the mean of its divisors is an integer number (334170).

2^2821690 is an apocalyptic number.

2821690 is a deficient number, since it is larger than the sum of its proper divisors (2525030).

2821690 is a wasteful number, since it uses less digits than its factorization.

2821690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14877.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 2821690 is about 1679.7886771853. The cubic root of 2821690 is about 141.3089815546.

The spelling of 2821690 in words is "two million, eight hundred twenty-one thousand, six hundred ninety".