16880642 has 4 divisors (see below), whose sum is σ = 25320966. Its totient is φ = 8440320.

The previous prime is 16880629. The next prime is 16880681. The reversal of 16880642 is 24608861.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 8649481 + 8231161 = 2941^2 + 2869^2 .

It is a plaindrome in base 9.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4220159 + ... + 4220162.

Almost surely, 2^16880642 is an apocalyptic number.

16880642 is a deficient number, since it is larger than the sum of its proper divisors (8440324).

16880642 is an equidigital number, since it uses as much as digits as its factorization.

16880642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8440323.

The product of its (nonzero) digits is 18432, while the sum is 35.

The square root of 16880642 is about 4108.6058462695. The cubic root of 16880642 is about 256.5249745475.

The spelling of 16880642 in words is "sixteen million, eight hundred eighty thousand, six hundred forty-two".