20482447 has 4 divisors (see below), whose sum is σ = 20572120. Its totient is φ = 20392776.

The previous prime is 20482391. The next prime is 20482463. The reversal of 20482447 is 74428402.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74428402 = 2 ⋅37214201.

It is a cyclic number.

It is not a de Polignac number, because 20482447 - 2²³ = 12093839 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20482547) 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, 44493 + ... + 44950.

It is an arithmetic number, because the mean of its divisors is an integer number (5143030).

Almost surely, 2^20482447 is an apocalyptic number.

20482447 is a deficient number, since it is larger than the sum of its proper divisors (89673).

20482447 is an equidigital number, since it uses as much as digits as its factorization.

20482447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89672.

The product of its (nonzero) digits is 14336, while the sum is 31.

The square root of 20482447 is about 4525.7537493770. The cubic root of 20482447 is about 273.6070476779.

The spelling of 20482447 in words is "twenty million, four hundred eighty-two thousand, four hundred forty-seven".