15120030 has 16 divisors (see below), whose sum is σ = 36288144. Its totient is φ = 4032000.

The previous prime is 15120023. The next prime is 15120031. The reversal of 15120030 is 3002151.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 15119988 and 15120015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15120031) 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, 251971 + ... + 252030.

It is an arithmetic number, because the mean of its divisors is an integer number (2268009).

Almost surely, 2^15120030 is an apocalyptic number.

15120030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15120030 is an abundant number, since it is smaller than the sum of its proper divisors (21168114).

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

15120030 is a wasteful number, since it uses less digits than its factorization.

15120030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 504011.

The product of its (nonzero) digits is 30, while the sum is 12.

The square root of 15120030 is about 3888.4482766266. The cubic root of 15120030 is about 247.2772815315.

Adding to 15120030 its reverse (3002151), we get a palindrome (18122181).

The spelling of 15120030 in words is "fifteen million, one hundred twenty thousand, thirty".