20259474 has 8 divisors (see below), whose sum is σ = 40518960. Its totient is φ = 6753156.

The previous prime is 20259467. The next prime is 20259497. The reversal of 20259474 is 47495202.

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

20259474 is an admirable number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1688284 + ... + 1688295.

It is an arithmetic number, because the mean of its divisors is an integer number (5064870).

Almost surely, 2^20259474 is an apocalyptic number.

20259474 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20259474 is a wasteful number, since it uses less digits than its factorization.

20259474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3376584.

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 20259474 is about 4501.0525435724. The cubic root of 20259474 is about 272.6105894592.

The spelling of 20259474 in words is "twenty million, two hundred fifty-nine thousand, four hundred seventy-four".