21434314 has 32 divisors (see below), whose sum is σ = 37449216. Its totient is φ = 9093120.

The previous prime is 21434293. The next prime is 21434323. The reversal of 21434314 is 41343412.

It is a Harshad number since it is a multiple of its sum of digits (22).

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 15 ways as a sum of consecutive naturals, for example, 83274 + ... + 83530.

It is an arithmetic number, because the mean of its divisors is an integer number (1170288).

Almost surely, 2^21434314 is an apocalyptic number.

21434314 is a deficient number, since it is larger than the sum of its proper divisors (16014902).

21434314 is a wasteful number, since it uses less digits than its factorization.

21434314 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 510.

The product of its digits is 1152, while the sum is 22.

The square root of 21434314 is about 4629.7207259186. The cubic root of 21434314 is about 277.7814216174.

Adding to 21434314 its reverse (41343412), we get a palindrome (62777726).

The spelling of 21434314 in words is "twenty-one million, four hundred thirty-four thousand, three hundred fourteen".