11307978 has 32 divisors (see below), whose sum is σ = 27414720. Its totient is φ = 3426480.

The previous prime is 11307929. The next prime is 11307979. The reversal of 11307978 is 87970311.

11307978 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (11307979) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8925 + ... + 10112.

It is an arithmetic number, because the mean of its divisors is an integer number (856710).

Almost surely, 2^11307978 is an apocalyptic number.

11307978 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

11307978 is an abundant number, since it is smaller than the sum of its proper divisors (16106742).

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

11307978 is a wasteful number, since it uses less digits than its factorization.

11307978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19059 (or 19053 counting only the distinct ones).

The product of its (nonzero) digits is 10584, while the sum is 36.

The square root of 11307978 is about 3362.7337093502. The cubic root of 11307978 is about 224.4545007603.

The spelling of 11307978 in words is "eleven million, three hundred seven thousand, nine hundred seventy-eight".