16887406 has 4 divisors (see below), whose sum is σ = 25331112. Its totient is φ = 8443702.

The previous prime is 16887389. The next prime is 16887413. The reversal of 16887406 is 60478861.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4221850 + ... + 4221853.

It is an arithmetic number, because the mean of its divisors is an integer number (6332778).

Almost surely, 2^16887406 is an apocalyptic number.

16887406 is a deficient number, since it is larger than the sum of its proper divisors (8443706).

16887406 is an equidigital number, since it uses as much as digits as its factorization.

16887406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8443705.

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 16887406 is about 4109.4289140950. The cubic root of 16887406 is about 256.5592327870.

The spelling of 16887406 in words is "sixteen million, eight hundred eighty-seven thousand, four hundred six".