20058636 has 48 divisors (see below), whose sum is σ = 51141888. Its totient is φ = 6081600.

The previous prime is 20058631. The next prime is 20058637. The reversal of 20058636 is 63685002.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (20058631) 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, 10171 + ... + 11981.

It is an arithmetic number, because the mean of its divisors is an integer number (1065456).

Almost surely, 2^20058636 is an apocalyptic number.

20058636 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20058636, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25570944).

20058636 is an abundant number, since it is smaller than the sum of its proper divisors (31083252).

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

20058636 is a wasteful number, since it uses less digits than its factorization.

20058636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1902 (or 1900 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 20058636 is about 4478.6868611235. The cubic root of 20058636 is about 271.7067738260.

The spelling of 20058636 in words is "twenty million, fifty-eight thousand, six hundred thirty-six".