15320140 has 48 divisors (see below), whose sum is σ = 35562240. Its totient is φ = 5497280.

The previous prime is 15320131. The next prime is 15320141. The reversal of 15320140 is 4102351.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15320141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17841 + ... + 18679.

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

Almost surely, 2^15320140 is an apocalyptic number.

15320140 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 15320140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17781120).

15320140 is an abundant number, since it is smaller than the sum of its proper divisors (20242100).

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

15320140 is a wasteful number, since it uses less digits than its factorization.

15320140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 942 (or 940 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 15320140 is about 3914.0950422799. The cubic root of 15320140 is about 248.3633894025.

Adding to 15320140 its reverse (4102351), we get a palindrome (19422491).

The spelling of 15320140 in words is "fifteen million, three hundred twenty thousand, one hundred forty".