11329840 has 20 divisors (see below), whose sum is σ = 26342064. Its totient is φ = 4531904.

The previous prime is 11329793. The next prime is 11329841. The reversal of 11329840 is 4892311.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 11329799 and 11329808.

It is not an unprimeable number, because it can be changed into a prime (11329841) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70732 + ... + 70891.

Almost surely, 2^11329840 is an apocalyptic number.

11329840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11329840 is an abundant number, since it is smaller than the sum of its proper divisors (15012224).

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

11329840 is a wasteful number, since it uses less digits than its factorization.

11329840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141636 (or 141630 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 11329840 is about 3365.9827688210. The cubic root of 11329840 is about 224.5990554984.

The spelling of 11329840 in words is "eleven million, three hundred twenty-nine thousand, eight hundred forty".