2090815 has 8 divisors (see below), whose sum is σ = 2618208. Its totient is φ = 1599840.

The previous prime is 2090807. The next prime is 2090821. The reversal of 2090815 is 5180902.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2090815 - 2³ = 2090807 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 2090815.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8976 + ... + 9205.

It is an arithmetic number, because the mean of its divisors is an integer number (327276).

2^2090815 is an apocalyptic number.

2090815 is a deficient number, since it is larger than the sum of its proper divisors (527393).

2090815 is a wasteful number, since it uses less digits than its factorization.

2090815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18209.

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 2090815 is about 1445.9650756502. The cubic root of 2090815 is about 127.8709433266.

The spelling of 2090815 in words is "two million, ninety thousand, eight hundred fifteen".