20282479 has 8 divisors (see below), whose sum is σ = 24543648. Its totient is φ = 16362240.

The previous prime is 20282473. The next prime is 20282543. The reversal of 20282479 is 97428202.

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 20282479 - 2⁵ = 20282447 is a prime.

It is a super-2 number, since 2×20282479² = 822757908770882, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20282473) 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, 85102 + ... + 85339.

It is an arithmetic number, because the mean of its divisors is an integer number (3067956).

Almost surely, 2^20282479 is an apocalyptic number.

20282479 is a deficient number, since it is larger than the sum of its proper divisors (4261169).

20282479 is a wasteful number, since it uses less digits than its factorization.

20282479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170465.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 20282479 is about 4503.6073319063. The cubic root of 20282479 is about 272.7137351833.

The spelling of 20282479 in words is "twenty million, two hundred eighty-two thousand, four hundred seventy-nine".