17949140 has 36 divisors (see below), whose sum is σ = 41436948. Its totient is φ = 6526080.

The previous prime is 17949097. The next prime is 17949163. The reversal of 17949140 is 4194971.

It can be written as a sum of positive squares in 2 ways, for example, as 10745284 + 7203856 = 3278^2 + 2684^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 17949140.

It is a congruent number.

It is an unprimeable number.

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, 1289 + ... + 6128.

Almost surely, 2^17949140 is an apocalyptic number.

17949140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

17949140 is an abundant number, since it is smaller than the sum of its proper divisors (23487808).

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

17949140 is a wasteful number, since it uses less digits than its factorization.

17949140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7448 (or 7435 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 17949140 is about 4236.6425386147. The cubic root of 17949140 is about 261.8270715597.

The spelling of 17949140 in words is "seventeen million, nine hundred forty-nine thousand, one hundred forty".