2815390 has 8 divisors (see below), whose sum is σ = 5067720. Its totient is φ = 1126152.

The previous prime is 2815369. The next prime is 2815399. The reversal of 2815390 is 935182.

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 (2815399) 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, 140760 + ... + 140779.

It is an arithmetic number, because the mean of its divisors is an integer number (633465).

2^2815390 is an apocalyptic number.

2815390 is a deficient number, since it is larger than the sum of its proper divisors (2252330).

2815390 is a wasteful number, since it uses less digits than its factorization.

2815390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281546.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 2815390 is about 1677.9123934223. The cubic root of 2815390 is about 141.2037361214.

It can be divided in two parts, 281 and 5390, that added together give a triangular number (5671 = T₁₀₆).

The spelling of 2815390 in words is "two million, eight hundred fifteen thousand, three hundred ninety".