15713540 has 24 divisors (see below), whose sum is σ = 33226200. Its totient is φ = 6242048.

The previous prime is 15713521. The next prime is 15713543. The reversal of 15713540 is 4531751.

15713540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 158404 + 15555136 = 398^2 + 3944^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15713543) 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, 344 + ... + 5616.

It is an arithmetic number, because the mean of its divisors is an integer number (1384425).

Almost surely, 2^15713540 is an apocalyptic number.

15713540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15713540 is an abundant number, since it is smaller than the sum of its proper divisors (17512660).

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

15713540 is a wasteful number, since it uses less digits than its factorization.

15713540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5431 (or 5429 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 26.

The square root of 15713540 is about 3964.0307768735. The cubic root of 15713540 is about 250.4713241890.

The spelling of 15713540 in words is "fifteen million, seven hundred thirteen thousand, five hundred forty".