21627914 has 24 divisors (see below), whose sum is σ = 41171328. Its totient is φ = 8426040.

The previous prime is 21627913. The next prime is 21627923. The reversal of 21627914 is 41972612.

It is a happy number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (21627911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8954 + ... + 11109.

It is an arithmetic number, because the mean of its divisors is an integer number (1715472).

Almost surely, 2^21627914 is an apocalyptic number.

21627914 is a deficient number, since it is larger than the sum of its proper divisors (19543414).

21627914 is a wasteful number, since it uses less digits than its factorization.

21627914 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20090 (or 20083 counting only the distinct ones).

The product of its digits is 6048, while the sum is 32.

The square root of 21627914 is about 4650.5821141014. The cubic root of 21627914 is about 278.6152462554.

The spelling of 21627914 in words is "twenty-one million, six hundred twenty-seven thousand, nine hundred fourteen".