15121330 has 64 divisors (see below), whose sum is σ = 33530112. Its totient is φ = 4792320.

The previous prime is 15121307. The next prime is 15121331. The reversal of 15121330 is 3312151.

It is not an unprimeable number, because it can be changed into a prime (15121331) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 115365 + ... + 115495.

It is an arithmetic number, because the mean of its divisors is an integer number (523908).

Almost surely, 2^15121330 is an apocalyptic number.

15121330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15121330 is an abundant number, since it is smaller than the sum of its proper divisors (18408782).

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

15121330 is a wasteful number, since it uses less digits than its factorization.

15121330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259.

The product of its (nonzero) digits is 90, while the sum is 16.

The square root of 15121330 is about 3888.6154348302. The cubic root of 15121330 is about 247.2843681853.

Adding to 15121330 its reverse (3312151), we get a palindrome (18433481).

It can be divided in two parts, 15121 and 330, that added together give a palindrome (15451).

The spelling of 15121330 in words is "fifteen million, one hundred twenty-one thousand, three hundred thirty".