11280004 has 6 divisors (see below), whose sum is σ = 19740014. Its totient is φ = 5640000.

The previous prime is 11279981. The next prime is 11280007. The reversal of 11280004 is 40008211.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 11235904 + 44100 = 3352^2 + 210^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 11280004.

It is not an unprimeable number, because it can be changed into a prime (11280007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1409997 + ... + 1410004.

Almost surely, 2^11280004 is an apocalyptic number.

It is an amenable number.

11280004 is a deficient number, since it is larger than the sum of its proper divisors (8460010).

11280004 is a wasteful number, since it uses less digits than its factorization.

11280004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2820005 (or 2820003 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 11280004 is about 3358.5717202406. The cubic root of 11280004 is about 224.2692606002.

Adding to 11280004 its reverse (40008211), we get a palindrome (51288215).

The spelling of 11280004 in words is "eleven million, two hundred eighty thousand, four".