20094580 has 48 divisors (see below), whose sum is σ = 46347840. Its totient is φ = 7257600.

The previous prime is 20094577. The next prime is 20094583. The reversal of 20094580 is 8549002.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20094577) and next prime (20094583).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20094583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52831 + ... + 53209.

It is an arithmetic number, because the mean of its divisors is an integer number (965580).

Almost surely, 2^20094580 is an apocalyptic number.

20094580 is a gapful number since it is divisible by the number (20) 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 20094580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23173920).

20094580 is an abundant number, since it is smaller than the sum of its proper divisors (26253260).

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

20094580 is a wasteful number, since it uses less digits than its factorization.

20094580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 640 (or 638 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 20094580 is about 4482.6978483944. The cubic root of 20094580 is about 271.8689716372.

The spelling of 20094580 in words is "twenty million, ninety-four thousand, five hundred eighty".