15120013 has 8 divisors (see below), whose sum is σ = 15628032. Its totient is φ = 14617296.

The previous prime is 15120011. The next prime is 15120019. The reversal of 15120013 is 31002151.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 15120013 - 2¹ = 15120011 is a prime.

It is a super-2 number, since 2×15120013² = 457229586240338, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 15119975 and 15120002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15120011) 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, 4956 + ... + 7402.

It is an arithmetic number, because the mean of its divisors is an integer number (1953504).

Almost surely, 2^15120013 is an apocalyptic number.

It is an amenable number.

15120013 is a deficient number, since it is larger than the sum of its proper divisors (508019).

15120013 is a wasteful number, since it uses less digits than its factorization.

15120013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2651.

The product of its (nonzero) digits is 30, while the sum is 13.

The square root of 15120013 is about 3888.4460906640. The cubic root of 15120013 is about 247.2771888572.

Adding to 15120013 its reverse (31002151), we get a palindrome (46122164).

It can be divided in two parts, 151 and 20013, that added together give a square (20164 = 142²).

The spelling of 15120013 in words is "fifteen million, one hundred twenty thousand, thirteen".