21714355 has 32 divisors (see below), whose sum is σ = 30469824. Its totient is φ = 14708736.

The previous prime is 21714337. The next prime is 21714367. The reversal of 21714355 is 55341712.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 21714355 - 2⁹ = 21713843 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 47287 + ... + 47743.

It is an arithmetic number, because the mean of its divisors is an integer number (952182).

Almost surely, 2^21714355 is an apocalyptic number.

21714355 is a deficient number, since it is larger than the sum of its proper divisors (8755469).

21714355 is a wasteful number, since it uses less digits than its factorization.

21714355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 535.

The product of its digits is 4200, while the sum is 28.

The square root of 21714355 is about 4659.8664143943. The cubic root of 21714355 is about 278.9859364365.

The spelling of 21714355 in words is "twenty-one million, seven hundred fourteen thousand, three hundred fifty-five".