17949996 has 18 divisors (see below), whose sum is σ = 45373692. Its totient is φ = 5983320.

The previous prime is 17949991. The next prime is 17950001. The reversal of 17949996 is 69994971.

It is an interprime number because it is at equal distance from previous prime (17949991) and next prime (17950001).

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (17949991) 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 5 ways as a sum of consecutive naturals, for example, 249270 + ... + 249341.

Almost surely, 2^17949996 is an apocalyptic number.

It is an amenable number.

17949996 is an abundant number, since it is smaller than the sum of its proper divisors (27423696).

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

17949996 is a wasteful number, since it uses less digits than its factorization.

17949996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 498621 (or 498616 counting only the distinct ones).

The product of its digits is 1102248, while the sum is 54.

The square root of 17949996 is about 4236.7435608023. The cubic root of 17949996 is about 261.8312336980.

The spelling of 17949996 in words is "seventeen million, nine hundred forty-nine thousand, nine hundred ninety-six".