20426285 has 8 divisors (see below), whose sum is σ = 26739936. Its totient is φ = 14855440.

The previous prime is 20426281. The next prime is 20426291. The reversal of 20426285 is 58262402.

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

It is not a de Polignac number, because 20426285 - 2² = 20426281 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 (20426281) 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, 185639 + ... + 185748.

It is an arithmetic number, because the mean of its divisors is an integer number (3342492).

Almost surely, 2^20426285 is an apocalyptic number.

It is an amenable number.

20426285 is a deficient number, since it is larger than the sum of its proper divisors (6313651).

20426285 is a wasteful number, since it uses less digits than its factorization.

20426285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371403.

The product of its (nonzero) digits is 7680, while the sum is 29.

The square root of 20426285 is about 4519.5447779616. The cubic root of 20426285 is about 273.3567457968.

Adding to 20426285 its reverse (58262402), we get a palindrome (78688687).

The spelling of 20426285 in words is "twenty million, four hundred twenty-six thousand, two hundred eighty-five".