21349795 has 8 divisors (see below), whose sum is σ = 25645680. Its totient is φ = 17062560.

The previous prime is 21349759. The next prime is 21349813. The reversal of 21349795 is 59794312.

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

It is not a de Polignac number, because 21349795 - 2⁷ = 21349667 is a prime.

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, 6261 + ... + 9049.

It is an arithmetic number, because the mean of its divisors is an integer number (3205710).

Almost surely, 2^21349795 is an apocalyptic number.

21349795 is a deficient number, since it is larger than the sum of its proper divisors (4295885).

21349795 is a wasteful number, since it uses less digits than its factorization.

21349795 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4325.

The product of its digits is 68040, while the sum is 40.

The square root of 21349795 is about 4620.5838375686. The cubic root of 21349795 is about 277.4158281629.

The spelling of 21349795 in words is "twenty-one million, three hundred forty-nine thousand, seven hundred ninety-five".