11878471 has 4 divisors (see below), whose sum is σ = 12958344. Its totient is φ = 10798600.

The previous prime is 11878457. The next prime is 11878501. The reversal of 11878471 is 17487811.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11878471 - 2⁷ = 11878343 is a prime.

It is a super-3 number, since 3×11878471³ (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11878471.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11878421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 539920 + ... + 539941.

It is an arithmetic number, because the mean of its divisors is an integer number (3239586).

Almost surely, 2^11878471 is an apocalyptic number.

11878471 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11878471 is a deficient number, since it is larger than the sum of its proper divisors (1079873).

11878471 is a wasteful number, since it uses less digits than its factorization.

11878471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1079872.

The product of its digits is 12544, while the sum is 37.

The square root of 11878471 is about 3446.5157768390. The cubic root of 11878471 is about 228.1673581444.

The spelling of 11878471 in words is "eleven million, eight hundred seventy-eight thousand, four hundred seventy-one".