18620004 has 24 divisors (see below), whose sum is σ = 46789120. Its totient is φ = 5729184.

The previous prime is 18620003. The next prime is 18620009. The reversal of 18620004 is 40002681.

It is not an unprimeable number, because it can be changed into a prime (18620003) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 59524 + ... + 59835.

Almost surely, 2^18620004 is an apocalyptic number.

It is an amenable number.

18620004 is an abundant number, since it is smaller than the sum of its proper divisors (28169116).

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

18620004 is a wasteful number, since it uses less digits than its factorization.

18620004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119379 (or 119377 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 18620004 is about 4315.0902655680. The cubic root of 18620004 is about 265.0492563003.

Adding to 18620004 its reverse (40002681), we get a palindrome (58622685).

The spelling of 18620004 in words is "eighteen million, six hundred twenty thousand, four".