11178972 has 144 divisors (see below), whose sum is σ = 35223552. Its totient is φ = 3032640.

The previous prime is 11178971. The next prime is 11179033. The reversal of 11178972 is 27987111.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11178971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 210898 + ... + 210950.

It is an arithmetic number, because the mean of its divisors is an integer number (244608).

Almost surely, 2^11178972 is an apocalyptic number.

11178972 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11178972, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17611776).

11178972 is an abundant number, since it is smaller than the sum of its proper divisors (24044580).

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

11178972 is a wasteful number, since it uses less digits than its factorization.

11178972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110 (or 96 counting only the distinct ones).

The product of its digits is 7056, while the sum is 36.

The square root of 11178972 is about 3343.4969717348. The cubic root of 11178972 is about 223.5976781281.

The spelling of 11178972 in words is "eleven million, one hundred seventy-eight thousand, nine hundred seventy-two".