15225340 has 48 divisors (see below), whose sum is σ = 35562240. Its totient is φ = 5437440.

The previous prime is 15225337. The next prime is 15225359. The reversal of 15225340 is 4352251.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 7116 + ... + 9004.

It is an arithmetic number, because the mean of its divisors is an integer number (740880).

Almost surely, 2^15225340 is an apocalyptic number.

15225340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15225340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17781120).

15225340 is an abundant number, since it is smaller than the sum of its proper divisors (20336900).

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

15225340 is a wasteful number, since it uses less digits than its factorization.

15225340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1942 (or 1940 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 15225340 is about 3901.9661710476. The cubic root of 15225340 is about 247.8500437540.

Adding to 15225340 its reverse (4352251), we get a palindrome (19577591).

The spelling of 15225340 in words is "fifteen million, two hundred twenty-five thousand, three hundred forty".