15340861 has 4 divisors (see below), whose sum is σ = 15364800. Its totient is φ = 15316924.

The previous prime is 15340859. The next prime is 15340873. The reversal of 15340861 is 16804351.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 16804351 = 71 ⋅236681.

It is a cyclic number.

It is not a de Polignac number, because 15340861 - 2¹ = 15340859 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15340261) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 10981 + ... + 12298.

It is an arithmetic number, because the mean of its divisors is an integer number (3841200).

Almost surely, 2^15340861 is an apocalyptic number.

It is an amenable number.

15340861 is a deficient number, since it is larger than the sum of its proper divisors (23939).

15340861 is an equidigital number, since it uses as much as digits as its factorization.

15340861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23938.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 15340861 is about 3916.7411198597. The cubic root of 15340861 is about 248.4753122121.

It can be divided in two parts, 153 and 40861, that added together give a palindrome (41014).

The spelling of 15340861 in words is "fifteen million, three hundred forty thousand, eight hundred sixty-one".