2015490 has 48 divisors (see below), whose sum is σ = 5096448. Its totient is φ = 510048.

The previous prime is 2015473. The next prime is 2015491. The reversal of 2015490 is 945102.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2015491) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15807 + ... + 15933.

It is an arithmetic number, because the mean of its divisors is an integer number (106176).

2^2015490 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2015490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2548224).

2015490 is an abundant number, since it is smaller than the sum of its proper divisors (3080958).

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

2015490 is a wasteful number, since it uses less digits than its factorization.

2015490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183 (or 160 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 2015490 is about 1419.6795413050. The cubic root of 2015490 is about 126.3165384641.

The spelling of 2015490 in words is "two million, fifteen thousand, four hundred ninety".