20259954 has 96 divisors (see below), whose sum is σ = 54722304. Its totient is φ = 5322240.

The previous prime is 20259949. The next prime is 20259973. The reversal of 20259954 is 45995202.

It is a happy number.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 43527 + ... + 43989.

It is an arithmetic number, because the mean of its divisors is an integer number (570024).

Almost surely, 2^20259954 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20259954, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27361152).

20259954 is an abundant number, since it is smaller than the sum of its proper divisors (34462350).

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

20259954 is a wasteful number, since it uses less digits than its factorization.

20259954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 512 (or 509 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The square root of 20259954 is about 4501.1058641183. The cubic root of 20259954 is about 272.6127423952.

The spelling of 20259954 in words is "twenty million, two hundred fifty-nine thousand, nine hundred fifty-four".