10287978 has 8 divisors (see below), whose sum is σ = 20575968. Its totient is φ = 3429324.

The previous prime is 10287929. The next prime is 10287983. The reversal of 10287978 is 87978201.

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

10287978 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 857326 + ... + 857337.

It is an arithmetic number, because the mean of its divisors is an integer number (2571996).

Almost surely, 2^10287978 is an apocalyptic number.

10287978 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.

10287978 is a wasteful number, since it uses less digits than its factorization.

10287978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1714668.

The product of its (nonzero) digits is 56448, while the sum is 42.

The square root of 10287978 is about 3207.4878020033. The cubic root of 10287978 is about 217.4920277168.

Adding to 10287978 its product of nonzero digits (56448), we get a triangular number (10344426 = T₄₅₄₈).

The spelling of 10287978 in words is "ten million, two hundred eighty-seven thousand, nine hundred seventy-eight".