15721482 has 16 divisors (see below), whose sum is σ = 35934912. Its totient is φ = 4491840.

The previous prime is 15721463. The next prime is 15721487. The reversal of 15721482 is 28412751.

It is not an unprimeable number, because it can be changed into a prime (15721487) 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 7 ways as a sum of consecutive naturals, for example, 187119 + ... + 187202.

It is an arithmetic number, because the mean of its divisors is an integer number (2245932).

Almost surely, 2^15721482 is an apocalyptic number.

15721482 is an abundant number, since it is smaller than the sum of its proper divisors (20213430).

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

15721482 is a wasteful number, since it uses less digits than its factorization.

15721482 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374333.

The product of its digits is 4480, while the sum is 30.

The square root of 15721482 is about 3965.0324084426. The cubic root of 15721482 is about 250.5135151532.

The spelling of 15721482 in words is "fifteen million, seven hundred twenty-one thousand, four hundred eighty-two".