21346270 has 16 divisors (see below), whose sum is σ = 41916528. Its totient is φ = 7762240.

The previous prime is 21346261. The next prime is 21346289. The reversal of 21346270 is 7264312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96919 + ... + 97138.

It is an arithmetic number, because the mean of its divisors is an integer number (2619783).

Almost surely, 2^21346270 is an apocalyptic number.

21346270 is a deficient number, since it is larger than the sum of its proper divisors (20570258).

21346270 is a wasteful number, since it uses less digits than its factorization.

21346270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194075.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 21346270 is about 4620.2023765199. The cubic root of 21346270 is about 277.4005595602.

The spelling of 21346270 in words is "twenty-one million, three hundred forty-six thousand, two hundred seventy".