21454676 has 24 divisors (see below), whose sum is σ = 39830784. Its totient is φ = 10090080.

The previous prime is 21454661. The next prime is 21454681. The reversal of 21454676 is 67645412.

It is a congruent number.

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, 3701 + ... + 7523.

It is an arithmetic number, because the mean of its divisors is an integer number (1659616).

Almost surely, 2^21454676 is an apocalyptic number.

It is an amenable number.

21454676 is a deficient number, since it is larger than the sum of its proper divisors (18376108).

21454676 is a wasteful number, since it uses less digits than its factorization.

21454676 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3911 (or 3909 counting only the distinct ones).

The product of its digits is 40320, while the sum is 35.

The square root of 21454676 is about 4631.9192566365. The cubic root of 21454676 is about 277.8693553107.

The spelling of 21454676 in words is "twenty-one million, four hundred fifty-four thousand, six hundred seventy-six".