11480781 has 16 divisors (see below), whose sum is σ = 17055360. Its totient is φ = 6820800.

The previous prime is 11480773. The next prime is 11480803. The reversal of 11480781 is 18708411.

11480781 = T₃₃ + T₃₄ + ... + T₄₀₉.

It is not a de Polignac number, because 11480781 - 2³ = 11480773 is a prime.

It is a super-2 number, since 2×11480781² = 263616664739922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11480741) 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, 3945 + ... + 6206.

It is an arithmetic number, because the mean of its divisors is an integer number (1065960).

Almost surely, 2^11480781 is an apocalyptic number.

It is an amenable number.

11480781 is a deficient number, since it is larger than the sum of its proper divisors (5574579).

11480781 is a wasteful number, since it uses less digits than its factorization.

11480781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10196.

The product of its (nonzero) digits is 1792, while the sum is 30.

The square root of 11480781 is about 3388.3301196902. The cubic root of 11480781 is about 225.5920604507.

The spelling of 11480781 in words is "eleven million, four hundred eighty thousand, seven hundred eighty-one".