20047624 has 16 divisors (see below), whose sum is σ = 39800700. Its totient is φ = 9434112.

The previous prime is 20047609. The next prime is 20047633. The reversal of 20047624 is 42674002.

It can be written as a sum of positive squares in 2 ways, for example, as 18404100 + 1643524 = 4290^2 + 1282^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73569 + ... + 73840.

Almost surely, 2^20047624 is an apocalyptic number.

It is an amenable number.

20047624 is a deficient number, since it is larger than the sum of its proper divisors (19753076).

20047624 is a wasteful number, since it uses less digits than its factorization.

20047624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147432 (or 147428 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 20047624 is about 4477.4573141461. The cubic root of 20047624 is about 271.6570432479.

The spelling of 20047624 in words is "twenty million, forty-seven thousand, six hundred twenty-four".