2851990 has 8 divisors (see below), whose sum is σ = 5133600. Its totient is φ = 1140792.

The previous prime is 2851973. The next prime is 2851991. The reversal of 2851990 is 991582.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2851991) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142590 + ... + 142609.

It is an arithmetic number, because the mean of its divisors is an integer number (641700).

2^2851990 is an apocalyptic number.

2851990 is a deficient number, since it is larger than the sum of its proper divisors (2281610).

2851990 is a wasteful number, since it uses less digits than its factorization.

2851990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285206.

The product of its (nonzero) digits is 6480, while the sum is 34.

The square root of 2851990 is about 1688.7835858984. The cubic root of 2851990 is about 141.8129853106.

The spelling of 2851990 in words is "two million, eight hundred fifty-one thousand, nine hundred ninety".