20019054 has 64 divisors (see below), whose sum is σ = 45722880. Its totient is φ = 5790720.

The previous prime is 20019053. The next prime is 20019059. The reversal of 20019054 is 45091002.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 20019054.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20019053) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 206334 + ... + 206430.

It is an arithmetic number, because the mean of its divisors is an integer number (714420).

Almost surely, 2^20019054 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20019054, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22861440).

20019054 is an abundant number, since it is smaller than the sum of its proper divisors (25703826).

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

20019054 is a wasteful number, since it uses less digits than its factorization.

20019054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 20019054 is about 4474.2657498186. The cubic root of 20019054 is about 271.5279351549.

The spelling of 20019054 in words is "twenty million, nineteen thousand, fifty-four".