16981252 has 6 divisors (see below), whose sum is σ = 29717198. Its totient is φ = 8490624.

The previous prime is 16981247. The next prime is 16981303. The reversal of 16981252 is 25218961.

It can be written as a sum of positive squares in only one way, i.e., 13719616 + 3261636 = 3704^2 + 1806^2 .

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2122653 + ... + 2122660.

Almost surely, 2^16981252 is an apocalyptic number.

It is an amenable number.

16981252 is a deficient number, since it is larger than the sum of its proper divisors (12735946).

16981252 is a wasteful number, since it uses less digits than its factorization.

16981252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4245317 (or 4245315 counting only the distinct ones).

The product of its digits is 8640, while the sum is 34.

The square root of 16981252 is about 4120.8314694974. The cubic root of 16981252 is about 257.0336019694.

The spelling of 16981252 in words is "sixteen million, nine hundred eighty-one thousand, two hundred fifty-two".