21461676 has 12 divisors (see below), whose sum is σ = 50077272. Its totient is φ = 7153888.

The previous prime is 21461669. The next prime is 21461677. The reversal of 21461676 is 67616412.

It is a tau number, because it is divible by the number of its divisors (12).

It is a plaindrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (21461677) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 894225 + ... + 894248.

It is an arithmetic number, because the mean of its divisors is an integer number (4173106).

Almost surely, 2^21461676 is an apocalyptic number.

It is an amenable number.

21461676 is an abundant number, since it is smaller than the sum of its proper divisors (28615596).

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

21461676 is a wasteful number, since it uses less digits than its factorization.

21461676 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1788480 (or 1788478 counting only the distinct ones).

The product of its digits is 12096, while the sum is 33.

The square root of 21461676 is about 4632.6748213100. The cubic root of 21461676 is about 277.8995720955.

The spelling of 21461676 in words is "twenty-one million, four hundred sixty-one thousand, six hundred seventy-six".