11409880 has 32 divisors (see below), whose sum is σ = 27025200. Its totient is φ = 4323456.

The previous prime is 11409877. The next prime is 11409883. The reversal of 11409880 is 8890411.

11409880 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (11409877) and next prime (11409883).

It is a super-2 number, since 2×11409880² = 260370723228800, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11409883) 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, 6747 + ... + 8266.

Almost surely, 2^11409880 is an apocalyptic number.

11409880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11409880 is an abundant number, since it is smaller than the sum of its proper divisors (15615320).

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

11409880 is a wasteful number, since it uses less digits than its factorization.

11409880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15043 (or 15039 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 31.

The square root of 11409880 is about 3377.8513880868. The cubic root of 11409880 is about 225.1267105216.

The spelling of 11409880 in words is "eleven million, four hundred nine thousand, eight hundred eighty".