15212341240 has 32 divisors (see below), whose sum is σ = 34566665760. Its totient is φ = 6024688000.

The previous prime is 15212341229. The next prime is 15212341247. The reversal of 15212341240 is 4214321251.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15212341247) 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, 1878676 + ... + 1886755.

It is an arithmetic number, because the mean of its divisors is an integer number (1080208305).

Almost surely, 2^15212341240 is an apocalyptic number.

15212341240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15212341240 is an abundant number, since it is smaller than the sum of its proper divisors (19354324520).

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

15212341240 is a wasteful number, since it uses less digits than its factorization.

15212341240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3765543 (or 3765539 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

Adding to 15212341240 its reverse (4214321251), we get a palindrome (19426662491).

The spelling of 15212341240 in words is "fifteen billion, two hundred twelve million, three hundred forty-one thousand, two hundred forty".