20481259 has 8 divisors (see below), whose sum is σ = 21783440. Its totient is φ = 19201536.

The previous prime is 20481257. The next prime is 20481269. The reversal of 20481259 is 95218402.

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

It is a cyclic number.

It is not a de Polignac number, because 20481259 - 2¹ = 20481257 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20481259.

It is not an unprimeable number, because it can be changed into a prime (20481257) 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, 3714 + ... + 7399.

It is an arithmetic number, because the mean of its divisors is an integer number (2722930).

Almost surely, 2^20481259 is an apocalyptic number.

20481259 is a deficient number, since it is larger than the sum of its proper divisors (1302181).

20481259 is a wasteful number, since it uses less digits than its factorization.

20481259 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11229.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 20481259 is about 4525.6224986183. The cubic root of 20481259 is about 273.6017577589.

The spelling of 20481259 in words is "twenty million, four hundred eighty-one thousand, two hundred fifty-nine".