17980772 has 6 divisors (see below), whose sum is σ = 31466358. Its totient is φ = 8990384.

The previous prime is 17980763. The next prime is 17980789. The reversal of 17980772 is 27708971.

It can be written as a sum of positive squares in only one way, i.e., 17774656 + 206116 = 4216^2 + 454^2 .

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 as a sum of consecutive naturals, namely, 2247593 + ... + 2247600.

It is an arithmetic number, because the mean of its divisors is an integer number (5244393).

Almost surely, 2^17980772 is an apocalyptic number.

It is an amenable number.

17980772 is a deficient number, since it is larger than the sum of its proper divisors (13485586).

17980772 is a wasteful number, since it uses less digits than its factorization.

17980772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4495197 (or 4495195 counting only the distinct ones).

The product of its (nonzero) digits is 49392, while the sum is 41.

The square root of 17980772 is about 4240.3740401054. The cubic root of 17980772 is about 261.9807883666.

The spelling of 17980772 in words is "seventeen million, nine hundred eighty thousand, seven hundred seventy-two".