20394024 has 64 divisors (see below), whose sum is σ = 58631040. Its totient is φ = 5790720.

The previous prime is 20393983. The next prime is 20394037. The reversal of 20394024 is 42049302.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 20393985 and 20394003.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38884 + ... + 39404.

It is an arithmetic number, because the mean of its divisors is an integer number (916110).

Almost surely, 2^20394024 is an apocalyptic number.

20394024 is a gapful number since it is divisible by the number (24) 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 20394024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29315520).

20394024 is an abundant number, since it is smaller than the sum of its proper divisors (38237016).

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

20394024 is a wasteful number, since it uses less digits than its factorization.

20394024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 770 (or 766 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 20394024 is about 4515.9743134788. The cubic root of 20394024 is about 273.2127579759.

The spelling of 20394024 in words is "twenty million, three hundred ninety-four thousand, twenty-four".