10158778 has 24 divisors (see below), whose sum is σ = 18500832. Its totient is φ = 4163544.

The previous prime is 10158773. The next prime is 10158779. The reversal of 10158778 is 87785101.

10158778 is a nontrivial binomial coefficient, being equal to C(4508, 2).

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (10158773) 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 11 ways as a sum of consecutive naturals, for example, 1 + ... + 4507.

It is an arithmetic number, because the mean of its divisors is an integer number (770868).

Almost surely, 2^10158778 is an apocalyptic number.

10158778 is the 4507-th triangular number and also the 2254-th hexagonal number.

10158778 is the 1503-rd centered nonagonal number.

10158778 is a deficient number, since it is larger than the sum of its proper divisors (8342054).

10158778 is a wasteful number, since it uses less digits than its factorization.

10158778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4546 (or 4539 counting only the distinct ones).

The product of its (nonzero) digits is 15680, while the sum is 37.

The square root of 10158778 is about 3187.2837965892. The cubic root of 10158778 is about 216.5777428648.

The spelling of 10158778 in words is "ten million, one hundred fifty-eight thousand, seven hundred seventy-eight".