11477840 has 40 divisors (see below), whose sum is σ = 29114208. Its totient is φ = 4173440.

The previous prime is 11477819. The next prime is 11477857. The reversal of 11477840 is 4877411.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×11477840² = 263481622131200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11477797 and 11477806.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5642 + ... + 7401.

Almost surely, 2^11477840 is an apocalyptic number.

11477840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11477840 is an abundant number, since it is smaller than the sum of its proper divisors (17636368).

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

11477840 is a wasteful number, since it uses less digits than its factorization.

11477840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13067 (or 13061 counting only the distinct ones).

The product of its (nonzero) digits is 6272, while the sum is 32.

The square root of 11477840 is about 3387.8961023030. The cubic root of 11477840 is about 225.5727957070.

The spelling of 11477840 in words is "eleven million, four hundred seventy-seven thousand, eight hundred forty".