20940318 has 48 divisors (see below), whose sum is σ = 54587520. Its totient is φ = 5667408.

The previous prime is 20940289. The next prime is 20940329. The reversal of 20940318 is 81304902.

It is a super-2 number, since 2×20940318² = 876993835882248, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20940291 and 20940300.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1980 + ... + 6767.

It is an arithmetic number, because the mean of its divisors is an integer number (1137240).

Almost surely, 2^20940318 is an apocalyptic number.

20940318 is an abundant number, since it is smaller than the sum of its proper divisors (33647202).

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

20940318 is a wasteful number, since it uses less digits than its factorization.

20940318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8781 (or 8778 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 20940318 is about 4576.0592216448. The cubic root of 20940318 is about 275.6308075658.

The spelling of 20940318 in words is "twenty million, nine hundred forty thousand, three hundred eighteen".