15240945 has 32 divisors (see below), whose sum is σ = 26179200. Its totient is φ = 7547904.

The previous prime is 15240943. The next prime is 15240947. The reversal of 15240945 is 54904251.

It is an interprime number because it is at equal distance from previous prime (15240943) and next prime (15240947).

It is not a de Polignac number, because 15240945 - 2¹ = 15240943 is a prime.

It is not an unprimeable number, because it can be changed into a prime (15240941) 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 31 ways as a sum of consecutive naturals, for example, 14601 + ... + 15609.

It is an arithmetic number, because the mean of its divisors is an integer number (818100).

Almost surely, 2^15240945 is an apocalyptic number.

15240945 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

15240945 is a deficient number, since it is larger than the sum of its proper divisors (10938255).

15240945 is a wasteful number, since it uses less digits than its factorization.

15240945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1089.

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 15240945 is about 3903.9652918539. The cubic root of 15240945 is about 247.9346916568.

The spelling of 15240945 in words is "fifteen million, two hundred forty thousand, nine hundred forty-five".