2859390 has 24 divisors (see below), whose sum is σ = 7434648. Its totient is φ = 762480.

The previous prime is 2859377. The next prime is 2859391. The reversal of 2859390 is 939582.

It is a super-2 number, since 2×2859390² = 16352222344200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2859391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15796 + ... + 15975.

It is an arithmetic number, because the mean of its divisors is an integer number (309777).

2^2859390 is an apocalyptic number.

2859390 is an abundant number, since it is smaller than the sum of its proper divisors (4575258).

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

2859390 is a wasteful number, since it uses less digits than its factorization.

2859390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31784 (or 31781 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 2859390 is about 1690.9730926304. The cubic root of 2859390 is about 141.9355324635.

It can be divided in two parts, 2859 and 390, that added together give a square (3249 = 57²).

The spelling of 2859390 in words is "two million, eight hundred fifty-nine thousand, three hundred ninety".