11900004 has 72 divisors (see below), whose sum is σ = 30467808. Its totient is φ = 3611520.

The previous prime is 11900003. The next prime is 11900033. The reversal of 11900004 is 40000911.

It is a super-2 number, since 2×11900004² = 283220190400032, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11900003) 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 23 ways as a sum of consecutive naturals, for example, 177579 + ... + 177645.

It is an arithmetic number, because the mean of its divisors is an integer number (423164).

Almost surely, 2^11900004 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 11900004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15233904).

11900004 is an abundant number, since it is smaller than the sum of its proper divisors (18567804).

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

11900004 is a wasteful number, since it uses less digits than its factorization.

11900004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153 (or 132 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 11900004 is about 3449.6382419031. The cubic root of 11900004 is about 228.3051469757.

Adding to 11900004 its reverse (40000911), we get a palindrome (51900915).

The spelling of 11900004 in words is "eleven million, nine hundred thousand, four".