10978387 has 4 divisors (see below), whose sum is σ = 12546736. Its totient is φ = 9410040.

The previous prime is 10978349. The next prime is 10978391. The reversal of 10978387 is 78387901.

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 10978387 - 2²³ = 2589779 is a prime.

It is a super-2 number, since 2×10978387² = 241049962243538, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10978087) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 784164 + ... + 784177.

It is an arithmetic number, because the mean of its divisors is an integer number (3136684).

Almost surely, 2^10978387 is an apocalyptic number.

10978387 is a deficient number, since it is larger than the sum of its proper divisors (1568349).

10978387 is an equidigital number, since it uses as much as digits as its factorization.

10978387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1568348.

The product of its (nonzero) digits is 84672, while the sum is 43.

The square root of 10978387 is about 3313.3649059529. The cubic root of 10978387 is about 222.2522563387.

The spelling of 10978387 in words is "ten million, nine hundred seventy-eight thousand, three hundred eighty-seven".