10386978 has 16 divisors (see below), whose sum is σ = 23741760. Its totient is φ = 2967696.

The previous prime is 10386967. The next prime is 10386979. The reversal of 10386978 is 87968301.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 247309 = 10386978 / (1 + 0 + 3 + 8 + 6 + 9 + 7 + 8).

It is not an unprimeable number, because it can be changed into a prime (10386979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 123613 + ... + 123696.

It is an arithmetic number, because the mean of its divisors is an integer number (1483860).

Almost surely, 2^10386978 is an apocalyptic number.

10386978 is an abundant number, since it is smaller than the sum of its proper divisors (13354782).

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

10386978 is a wasteful number, since it uses less digits than its factorization.

10386978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247321.

The product of its (nonzero) digits is 72576, while the sum is 42.

The square root of 10386978 is about 3222.8834915336. The cubic root of 10386978 is about 218.1874352405.

The spelling of 10386978 in words is "ten million, three hundred eighty-six thousand, nine hundred seventy-eight".