18622120 has 32 divisors (see below), whose sum is σ = 45709920. Its totient is φ = 6771520.

The previous prime is 18622073. The next prime is 18622127. The reversal of 18622120 is 2122681.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 18622091 and 18622100.

It is not an unprimeable number, because it can be changed into a prime (18622127) 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, 20722 + ... + 21601.

It is an arithmetic number, because the mean of its divisors is an integer number (1428435).

Almost surely, 2^18622120 is an apocalyptic number.

18622120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18622120 is an abundant number, since it is smaller than the sum of its proper divisors (27087800).

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

18622120 is a wasteful number, since it uses less digits than its factorization.

18622120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42345 (or 42341 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 18622120 is about 4315.3354446671. The cubic root of 18622120 is about 265.0592960937.

The spelling of 18622120 in words is "eighteen million, six hundred twenty-two thousand, one hundred twenty".