11968840 has 32 divisors (see below), whose sum is σ = 29002680. Its totient is φ = 4419072.

The previous prime is 11968829. The next prime is 11968877. The reversal of 11968840 is 4886911.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 7650756 + 4318084 = 2766^2 + 2078^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 11968840.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10989 + ... + 12028.

Almost surely, 2^11968840 is an apocalyptic number.

11968840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11968840 is an abundant number, since it is smaller than the sum of its proper divisors (17033840).

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

11968840 is a wasteful number, since it uses less digits than its factorization.

11968840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23041 (or 23037 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 37.

The square root of 11968840 is about 3459.6011330788. The cubic root of 11968840 is about 228.7445139875.

The spelling of 11968840 in words is "eleven million, nine hundred sixty-eight thousand, eight hundred forty".