18220848 has 40 divisors (see below), whose sum is σ = 49550400. Its totient is φ = 5753664.

The previous prime is 18220847. The next prime is 18220849. The reversal of 18220848 is 84802281.

It is an interprime number because it is at equal distance from previous prime (18220847) and next prime (18220849).

It is not an unprimeable number, because it can be changed into a prime (18220841) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9078 + ... + 10901.

It is an arithmetic number, because the mean of its divisors is an integer number (1238760).

Almost surely, 2^18220848 is an apocalyptic number.

It is an amenable number.

18220848 is an abundant number, since it is smaller than the sum of its proper divisors (31329552).

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

18220848 is a wasteful number, since it uses less digits than its factorization.

18220848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20009 (or 20003 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 33.

The square root of 18220848 is about 4268.5885254965. The cubic root of 18220848 is about 263.1416105236.

The spelling of 18220848 in words is "eighteen million, two hundred twenty thousand, eight hundred forty-eight".