11012904 has 48 divisors (see below), whose sum is σ = 34089120. Its totient is φ = 3146400.

The previous prime is 11012893. The next prime is 11012909. The reversal of 11012904 is 40921011.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (11012909) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10422 + ... + 11429.

It is an arithmetic number, because the mean of its divisors is an integer number (710190).

Almost surely, 2^11012904 is an apocalyptic number.

11012904 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

11012904 is an abundant number, since it is smaller than the sum of its proper divisors (23076216).

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

11012904 is a wasteful number, since it uses less digits than its factorization.

11012904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21870 (or 21863 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The square root of 11012904 is about 3318.5695713666. The cubic root of 11012904 is about 222.4849394343.

Adding to 11012904 its reverse (40921011), we get a palindrome (51933915).

It can be divided in two parts, 1101 and 2904, that added together give a triangular number (4005 = T₈₉).

The spelling of 11012904 in words is "eleven million, twelve thousand, nine hundred four".