11403880 has 32 divisors (see below), whose sum is σ = 25858440. Its totient is φ = 4526080.

The previous prime is 11403859. The next prime is 11403913. The reversal of 11403880 is 8830411.

It can be written as a sum of positive squares in 4 ways, for example, as 8964036 + 2439844 = 2994^2 + 1562^2 .

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, 4440 + ... + 6520.

Almost surely, 2^11403880 is an apocalyptic number.

11403880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11403880 is an abundant number, since it is smaller than the sum of its proper divisors (14454560).

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

11403880 is a wasteful number, since it uses less digits than its factorization.

11403880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2229 (or 2225 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 25.

The square root of 11403880 is about 3376.9631327570. The cubic root of 11403880 is about 225.0872418885.

The spelling of 11403880 in words is "eleven million, four hundred three thousand, eight hundred eighty".