10978881 has 4 divisors (see below), whose sum is σ = 14638512. Its totient is φ = 7319252.

The previous prime is 10978861. The next prime is 10978883. The reversal of 10978881 is 18887901.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 10978881 - 2⁶ = 10978817 is a prime.

It is a super-2 number, since 2×10978881² = 241071656024322, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (10978883) 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, 1829811 + ... + 1829816.

It is an arithmetic number, because the mean of its divisors is an integer number (3659628).

Almost surely, 2^10978881 is an apocalyptic number.

It is an amenable number.

10978881 is a deficient number, since it is larger than the sum of its proper divisors (3659631).

10978881 is an equidigital number, since it uses as much as digits as its factorization.

10978881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3659630.

The product of its (nonzero) digits is 32256, while the sum is 42.

The square root of 10978881 is about 3313.4394516876. The cubic root of 10978881 is about 222.2555898876.

The spelling of 10978881 in words is "ten million, nine hundred seventy-eight thousand, eight hundred eighty-one".