20486934 has 48 divisors (see below), whose sum is σ = 49467600. Its totient is φ = 6084288.

The previous prime is 20486933. The next prime is 20486953. The reversal of 20486934 is 43968402.

It is a happy number.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20486933) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5277 + ... + 8295.

It is an arithmetic number, because the mean of its divisors is an integer number (1030575).

Almost surely, 2^20486934 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20486934, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24733800).

20486934 is an abundant number, since it is smaller than the sum of its proper divisors (28980666).

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

20486934 is a wasteful number, since it uses less digits than its factorization.

20486934 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3069 (or 3066 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 20486934 is about 4526.2494407622. The cubic root of 20486934 is about 273.6270255186.

The spelling of 20486934 in words is "twenty million, four hundred eighty-six thousand, nine hundred thirty-four".