10905978 has 8 divisors (see below), whose sum is σ = 21811968. Its totient is φ = 3635324.

The previous prime is 10905967. The next prime is 10905989. The reversal of 10905978 is 87950901.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (10905967) and next prime (10905989).

It is a sphenic number, since it is the product of 3 distinct primes.

10905978 is an admirable number.

It is a super-2 number, since 2×10905978² = 237880712272968, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 908826 + ... + 908837.

It is an arithmetic number, because the mean of its divisors is an integer number (2726496).

Almost surely, 2^10905978 is an apocalyptic number.

10905978 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

10905978 is a wasteful number, since it uses less digits than its factorization.

10905978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1817668.

The product of its (nonzero) digits is 22680, while the sum is 39.

The square root of 10905978 is about 3302.4200217416. The cubic root of 10905978 is about 221.7625494580.

The spelling of 10905978 in words is "ten million, nine hundred five thousand, nine hundred seventy-eight".