15722641 has 8 divisors (see below), whose sum is σ = 17319744. Its totient is φ = 14153520.

The previous prime is 15722621. The next prime is 15722677. The reversal of 15722641 is 14622751.

15722641 is nontrivially palindromic in base 5.

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 15722641 - 2¹⁵ = 15689873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15722621) 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, 5806 + ... + 8071.

It is an arithmetic number, because the mean of its divisors is an integer number (2164968).

Almost surely, 2^15722641 is an apocalyptic number.

15722641 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

15722641 is a deficient number, since it is larger than the sum of its proper divisors (1597103).

15722641 is a wasteful number, since it uses less digits than its factorization.

15722641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13991.

The product of its digits is 3360, while the sum is 28.

The square root of 15722641 is about 3965.1785584006. The cubic root of 15722641 is about 250.5196710196.

The spelling of 15722641 in words is "fifteen million, seven hundred twenty-two thousand, six hundred forty-one".