10187994 has 16 divisors (see below), whose sum is σ = 20458368. Its totient is φ = 3382272.

The previous prime is 10187963. The next prime is 10187999. The reversal of 10187994 is 49978101.

It is a happy number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (10187999) 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, 1762 + ... + 4845.

It is an arithmetic number, because the mean of its divisors is an integer number (1278648).

Almost surely, 2^10187994 is an apocalyptic number.

10187994 is an abundant number, since it is smaller than the sum of its proper divisors (10270374).

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

10187994 is a wasteful number, since it uses less digits than its factorization.

10187994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6869.

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

The square root of 10187994 is about 3191.8637188953. The cubic root of 10187994 is about 216.7851654224.

The spelling of 10187994 in words is "ten million, one hundred eighty-seven thousand, nine hundred ninety-four".