20492318 has 24 divisors (see below), whose sum is σ = 38616816. Its totient is φ = 7983360.

The previous prime is 20492273. The next prime is 20492321. The reversal of 20492318 is 81329402.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4355 + ... + 7742.

It is an arithmetic number, because the mean of its divisors is an integer number (1609034).

Almost surely, 2^20492318 is an apocalyptic number.

20492318 is a deficient number, since it is larger than the sum of its proper divisors (18124498).

20492318 is a wasteful number, since it uses less digits than its factorization.

20492318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12128 (or 12117 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 20492318 is about 4526.8441545960. The cubic root of 20492318 is about 273.6509932968.

The spelling of 20492318 in words is "twenty million, four hundred ninety-two thousand, three hundred eighteen".