18770004 has 108 divisors (see below), whose sum is σ = 54221440. Its totient is φ = 5464800.

The previous prime is 18769991. The next prime is 18770021. The reversal of 18770004 is 40007781.

It is a self number, because there is not a number n which added to its sum of digits gives 18770004.

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 35 ways as a sum of consecutive naturals, for example, 134967 + ... + 135105.

Almost surely, 2^18770004 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18770004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27110720).

18770004 is an abundant number, since it is smaller than the sum of its proper divisors (35451436).

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

18770004 is a wasteful number, since it uses less digits than its factorization.

18770004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202 (or 186 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 27.

The square root of 18770004 is about 4332.4362661209. The cubic root of 18770004 is about 265.7590861480.

Adding to 18770004 its reverse (40007781), we get a palindrome (58777785).

The spelling of 18770004 in words is "eighteen million, seven hundred seventy thousand, four".