20118392 has 32 divisors (see below), whose sum is σ = 43549920. Its totient is φ = 8534400.

The previous prime is 20118389. The next prime is 20118401. The reversal of 20118392 is 29381102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3878 + ... + 7434.

It is an arithmetic number, because the mean of its divisors is an integer number (1360935).

Almost surely, 2^20118392 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20118392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21774960).

20118392 is an abundant number, since it is smaller than the sum of its proper divisors (23431528).

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

20118392 is a wasteful number, since it uses less digits than its factorization.

20118392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3671 (or 3667 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 20118392 is about 4485.3530518790. The cubic root of 20118392 is about 271.9763171422.

Adding to 20118392 its reverse (29381102), we get a palindrome (49499494).

The spelling of 20118392 in words is "twenty million, one hundred eighteen thousand, three hundred ninety-two".