21532314 has 16 divisors (see below), whose sum is σ = 43158240. Its totient is φ = 7161840.

The previous prime is 21532309. The next prime is 21532327. The reversal of 21532314 is 41323512.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 709 + ... + 6600.

It is an arithmetic number, because the mean of its divisors is an integer number (2697390).

Almost surely, 2^21532314 is an apocalyptic number.

21532314 is an abundant number, since it is smaller than the sum of its proper divisors (21625926).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21532314 is a wasteful number, since it uses less digits than its factorization.

21532314 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7805.

The product of its digits is 720, while the sum is 21.

The square root of 21532314 is about 4640.2924476804. The cubic root of 21532314 is about 278.2041269454.

Adding to 21532314 its reverse (41323512), we get a palindrome (62855826).

The spelling of 21532314 in words is "twenty-one million, five hundred thirty-two thousand, three hundred fourteen".