21452606 has 32 divisors (see below), whose sum is σ = 40642560. Its totient is φ = 8274816.

The previous prime is 21452603. The next prime is 21452609. The reversal of 21452606 is 60625412.

It is an interprime number because it is at equal distance from previous prime (21452603) and next prime (21452609).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21452603) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3515 + ... + 7433.

It is an arithmetic number, because the mean of its divisors is an integer number (1270080).

Almost surely, 2^21452606 is an apocalyptic number.

21452606 is a deficient number, since it is larger than the sum of its proper divisors (19189954).

21452606 is a wasteful number, since it uses less digits than its factorization.

21452606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3968.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 21452606 is about 4631.6958017556. The cubic root of 21452606 is about 277.8604185166.

The spelling of 21452606 in words is "twenty-one million, four hundred fifty-two thousand, six hundred six".