10087978 has 8 divisors (see below), whose sum is σ = 15145668. Its totient is φ = 5039424.

The previous prime is 10087963. The next prime is 10088003. The reversal of 10087978 is 87978001.

It can be written as a sum of positive squares in 2 ways, for example, as 8862529 + 1225449 = 2977^2 + 1107^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 10087978.

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, 2400 + ... + 5092.

Almost surely, 2^10087978 is an apocalyptic number.

10087978 is a deficient number, since it is larger than the sum of its proper divisors (5057690).

10087978 is a wasteful number, since it uses less digits than its factorization.

10087978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4568.

The product of its (nonzero) digits is 28224, while the sum is 40.

The square root of 10087978 is about 3176.1577416747. The cubic root of 10087978 is about 216.0734346791.

The spelling of 10087978 in words is "ten million, eighty-seven thousand, nine hundred seventy-eight".