20185254 has 32 divisors (see below), whose sum is σ = 45312480. Its totient is φ = 6660000.

The previous prime is 20185241. The next prime is 20185259. The reversal of 20185254 is 45258102.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20185259) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3604 + ... + 7304.

It is an arithmetic number, because the mean of its divisors is an integer number (1416015).

Almost surely, 2^20185254 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20185254, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22656240).

20185254 is an abundant number, since it is smaller than the sum of its proper divisors (25127226).

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

20185254 is a wasteful number, since it uses less digits than its factorization.

20185254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3813 (or 3807 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

The square root of 20185254 is about 4492.8002403846. The cubic root of 20185254 is about 272.2772817563.

The spelling of 20185254 in words is "twenty million, one hundred eighty-five thousand, two hundred fifty-four".