21346118 has 12 divisors (see below), whose sum is σ = 34014372. Its totient is φ = 10044960.

The previous prime is 21346109. The next prime is 21346123. The reversal of 21346118 is 81164312.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 17888 + ... + 19043.

It is an arithmetic number, because the mean of its divisors is an integer number (2834531).

Almost surely, 2^21346118 is an apocalyptic number.

21346118 is a deficient number, since it is larger than the sum of its proper divisors (12668254).

21346118 is a wasteful number, since it uses less digits than its factorization.

21346118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36967 (or 36950 counting only the distinct ones).

The product of its digits is 1152, while the sum is 26.

The square root of 21346118 is about 4620.1859269947. The cubic root of 21346118 is about 277.3999011315.

The spelling of 21346118 in words is "twenty-one million, three hundred forty-six thousand, one hundred eighteen".