20147482 has 32 divisors (see below), whose sum is σ = 33339600. Its totient is φ = 9093120.

The previous prime is 20147459. The next prime is 20147483. The reversal of 20147482 is 28474102.

It can be written as a sum of positive squares in 8 ways, for example, as 3164841 + 16982641 = 1779^2 + 4121^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20147482.

It is not an unprimeable number, because it can be changed into a prime (20147483) 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 15 ways as a sum of consecutive naturals, for example, 135144 + ... + 135292.

Almost surely, 2^20147482 is an apocalyptic number.

20147482 is a deficient number, since it is larger than the sum of its proper divisors (13192118).

20147482 is a wasteful number, since it uses less digits than its factorization.

20147482 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306.

The product of its (nonzero) digits is 3584, while the sum is 28.

The square root of 20147482 is about 4488.5946575738. The cubic root of 20147482 is about 272.1073412121.

The spelling of 20147482 in words is "twenty million, one hundred forty-seven thousand, four hundred eighty-two".