20482561 has 8 divisors (see below), whose sum is σ = 22391424. Its totient is φ = 18581520.

The previous prime is 20482547. The next prime is 20482573. The reversal of 20482561 is 16528402.

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

It is not a de Polignac number, because 20482561 - 2⁵ = 20482529 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20482531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4456 + ... + 7798.

It is an arithmetic number, because the mean of its divisors is an integer number (2798928).

Almost surely, 2^20482561 is an apocalyptic number.

It is an amenable number.

20482561 is a deficient number, since it is larger than the sum of its proper divisors (1908863).

20482561 is a wasteful number, since it uses less digits than its factorization.

20482561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3911.

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 20482561 is about 4525.7663439466. The cubic root of 20482561 is about 273.6075552856.

The spelling of 20482561 in words is "twenty million, four hundred eighty-two thousand, five hundred sixty-one".