20394000 has 240 divisors, whose sum is σ = 78459264. Its totient is φ = 4896000.

The previous prime is 20393983. The next prime is 20394037. The reversal of 20394000 is 49302.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 197949 + ... + 198051.

Almost surely, 2^20394000 is an apocalyptic number.

20394000 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 20394000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39229632).

20394000 is an abundant number, since it is smaller than the sum of its proper divisors (58065264).

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

20394000 is a wasteful number, since it uses less digits than its factorization.

20394000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143 (or 124 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 20394000 is about 4515.9716562441. The cubic root of 20394000 is about 273.2126508022.

The spelling of 20394000 in words is "twenty million, three hundred ninety-four thousand".