20847482 has 8 divisors (see below), whose sum is σ = 31784052. Its totient is φ = 10252800.

The previous prime is 20847481. The next prime is 20847493. The reversal of 20847482 is 28474802.

It can be written as a sum of positive squares in 2 ways, for example, as 20784481 + 63001 = 4559^2 + 251^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (20847481) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85319 + ... + 85562.

Almost surely, 2^20847482 is an apocalyptic number.

20847482 is a deficient number, since it is larger than the sum of its proper divisors (10936570).

20847482 is a wasteful number, since it uses less digits than its factorization.

20847482 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170944.

The product of its (nonzero) digits is 28672, while the sum is 35.

The square root of 20847482 is about 4565.9042915944. The cubic root of 20847482 is about 275.2228804693. Note that the first 3 decimals are identical.

The spelling of 20847482 in words is "twenty million, eight hundred forty-seven thousand, four hundred eighty-two".