12015258 has 16 divisors (see below), whose sum is σ = 25295520. Its totient is φ = 3794256.

The previous prime is 12015257. The next prime is 12015271. The reversal of 12015258 is 85251021.

It is not an unprimeable number, because it can be changed into a prime (12015257) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52585 + ... + 52812.

It is an arithmetic number, because the mean of its divisors is an integer number (1580970).

Almost surely, 2^12015258 is an apocalyptic number.

12015258 is an abundant number, since it is smaller than the sum of its proper divisors (13280262).

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

12015258 is a wasteful number, since it uses less digits than its factorization.

12015258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105421.

The product of its (nonzero) digits is 800, while the sum is 24.

The square root of 12015258 is about 3466.3032181273. The cubic root of 12015258 is about 229.0398410242.

Adding to 12015258 its reverse (85251021), we get a palindrome (97266279).

The spelling of 12015258 in words is "twelve million, fifteen thousand, two hundred fifty-eight".