16291087 has 8 divisors (see below), whose sum is σ = 16873920. Its totient is φ = 15718560.

The previous prime is 16291057. The next prime is 16291091. The reversal of 16291087 is 78019261.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16291087 - 2⁷ = 16290959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16291007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 714 + ... + 5752.

It is an arithmetic number, because the mean of its divisors is an integer number (2109240).

Almost surely, 2^16291087 is an apocalyptic number.

16291087 is a deficient number, since it is larger than the sum of its proper divisors (582833).

16291087 is an equidigital number, since it uses as much as digits as its factorization.

16291087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5153.

The product of its (nonzero) digits is 6048, while the sum is 34.

The square root of 16291087 is about 4036.2218719986. The cubic root of 16291087 is about 253.5031465724.

The spelling of 16291087 in words is "sixteen million, two hundred ninety-one thousand, eighty-seven".