15214240 has 24 divisors (see below), whose sum is σ = 35944020. Its totient is φ = 6085632.

The previous prime is 15214189. The next prime is 15214249. The reversal of 15214240 is 4241251.

It can be written as a sum of positive squares in 2 ways, for example, as 14107536 + 1106704 = 3756^2 + 1052^2 .

It is not an unprimeable number, because it can be changed into a prime (15214249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47385 + ... + 47704.

Almost surely, 2^15214240 is an apocalyptic number.

15214240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15214240 is an abundant number, since it is smaller than the sum of its proper divisors (20729780).

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

15214240 is an equidigital number, since it uses as much as digits as its factorization.

15214240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95104 (or 95096 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 15214240 is about 3900.5435518656. The cubic root of 15214240 is about 247.7897976046.

Adding to 15214240 its reverse (4241251), we get a palindrome (19455491).

The spelling of 15214240 in words is "fifteen million, two hundred fourteen thousand, two hundred forty".