15120489 has 4 divisors (see below), whose sum is σ = 20160656. Its totient is φ = 10080324.

The previous prime is 15120487. The next prime is 15120527. The reversal of 15120489 is 98402151.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 98402151 = 3 ⋅32800717.

It is not a de Polignac number, because 15120489 - 2¹ = 15120487 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15120481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2520079 + ... + 2520084.

It is an arithmetic number, because the mean of its divisors is an integer number (5040164).

Almost surely, 2^15120489 is an apocalyptic number.

It is an amenable number.

15120489 is a deficient number, since it is larger than the sum of its proper divisors (5040167).

15120489 is an equidigital number, since it uses as much as digits as its factorization.

15120489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5040166.

The product of its (nonzero) digits is 2880, while the sum is 30.

The square root of 15120489 is about 3888.5072971514. The cubic root of 15120489 is about 247.2797837118.

The spelling of 15120489 in words is "fifteen million, one hundred twenty thousand, four hundred eighty-nine".