11880781 has 8 divisors (see below), whose sum is σ = 13379328. Its totient is φ = 10452000.

The previous prime is 11880769. The next prime is 11880809. The reversal of 11880781 is 18708811.

11880781 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11880781 - 2¹⁷ = 11749709 is a prime.

It is a super-2 number, since 2×11880781² = 282305914339922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11880721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17080 + ... + 17761.

It is an arithmetic number, because the mean of its divisors is an integer number (1672416).

Almost surely, 2^11880781 is an apocalyptic number.

11880781 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11880781 is a deficient number, since it is larger than the sum of its proper divisors (1498547).

11880781 is a wasteful number, since it uses less digits than its factorization.

11880781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34883.

The product of its (nonzero) digits is 3584, while the sum is 34.

The square root of 11880781 is about 3446.8508816019. The cubic root of 11880781 is about 228.1821477144.

The spelling of 11880781 in words is "eleven million, eight hundred eighty thousand, seven hundred eighty-one".