11878971 has 64 divisors (see below), whose sum is σ = 20321280. Its totient is φ = 6082560.

The previous prime is 11878967. The next prime is 11878973. The reversal of 11878971 is 17987811.

It is a happy number.

11878971 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11878971 - 2² = 11878967 is a prime.

It is a super-2 number, since 2×11878971² = 282219904037682, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11878973) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 289711 + ... + 289751.

It is an arithmetic number, because the mean of its divisors is an integer number (317520).

Almost surely, 2^11878971 is an apocalyptic number.

11878971 is a deficient number, since it is larger than the sum of its proper divisors (8442309).

11878971 is a wasteful number, since it uses less digits than its factorization.

11878971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116.

The product of its digits is 28224, while the sum is 42.

The square root of 11878971 is about 3446.5883131004. The cubic root of 11878971 is about 228.1705595126.

The spelling of 11878971 in words is "eleven million, eight hundred seventy-eight thousand, nine hundred seventy-one".