12015290 has 64 divisors (see below), whose sum is σ = 26265600. Its totient is φ = 3951360.

The previous prime is 12015287. The next prime is 12015301. The reversal of 12015290 is 9251021.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 106274 + ... + 106386.

It is an arithmetic number, because the mean of its divisors is an integer number (410400).

Almost surely, 2^12015290 is an apocalyptic number.

12015290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12015290 is an abundant number, since it is smaller than the sum of its proper divisors (14250310).

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

12015290 is a wasteful number, since it uses less digits than its factorization.

12015290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172 (or 158 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 20.

The square root of 12015290 is about 3466.3078339928. The cubic root of 12015290 is about 229.0400443565.

The spelling of 12015290 in words is "twelve million, fifteen thousand, two hundred ninety".