10194978 has 16 divisors (see below), whose sum is σ = 20887776. Its totient is φ = 3315360.

The previous prime is 10194971. The next prime is 10194983. The reversal of 10194978 is 87949101.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (10194971) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20476 + ... + 20967.

It is an arithmetic number, because the mean of its divisors is an integer number (1305486).

Almost surely, 2^10194978 is an apocalyptic number.

10194978 is an abundant number, since it is smaller than the sum of its proper divisors (10692798).

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

10194978 is a wasteful number, since it uses less digits than its factorization.

10194978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41489.

The product of its (nonzero) digits is 18144, while the sum is 39.

The square root of 10194978 is about 3192.9575631380. The cubic root of 10194978 is about 216.8346904406.

The spelling of 10194978 in words is "ten million, one hundred ninety-four thousand, nine hundred seventy-eight".