15740243 has 8 divisors (see below), whose sum is σ = 16528080. Its totient is φ = 14968800.

The previous prime is 15740239. The next prime is 15740261. The reversal of 15740243 is 34204751.

15740243 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 15740243 - 2² = 15740239 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15740213) 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, 2108 + ... + 5993.

It is an arithmetic number, because the mean of its divisors is an integer number (2066010).

Almost surely, 2^15740243 is an apocalyptic number.

15740243 is a deficient number, since it is larger than the sum of its proper divisors (787837).

15740243 is an equidigital number, since it uses as much as digits as its factorization.

15740243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8197.

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 15740243 is about 3967.3975097033. The cubic root of 15740243 is about 250.6131244179.

Adding to 15740243 its reverse (34204751), we get a palindrome (49944994).

The spelling of 15740243 in words is "fifteen million, seven hundred forty thousand, two hundred forty-three".