15013281 has 8 divisors (see below), whose sum is σ = 20066944. Its totient is φ = 9984240.

The previous prime is 15013279. The next prime is 15013309. The reversal of 15013281 is 18231051.

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

It is not a de Polignac number, because 15013281 - 2¹ = 15013279 is a prime.

It is a super-2 number, since 2×15013281² = 450797212769922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15011281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4681 + ... + 7206.

It is an arithmetic number, because the mean of its divisors is an integer number (2508368).

Almost surely, 2^15013281 is an apocalyptic number.

It is an amenable number.

15013281 is a deficient number, since it is larger than the sum of its proper divisors (5053663).

15013281 is a wasteful number, since it uses less digits than its factorization.

15013281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12311.

The product of its (nonzero) digits is 240, while the sum is 21.

The square root of 15013281 is about 3874.6975365827. The cubic root of 15013281 is about 246.6939721010.

It can be divided in two parts, 150 and 13281, that added together give a palindrome (13431).

The spelling of 15013281 in words is "fifteen million, thirteen thousand, two hundred eighty-one".