21467716 has 12 divisors (see below), whose sum is σ = 37839760. Its totient is φ = 10656360.

The previous prime is 21467713. The next prime is 21467729. The reversal of 21467716 is 61776412.

It is a happy number.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (21467711) 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, 18750 + ... + 19861.

Almost surely, 2^21467716 is an apocalyptic number.

It is an amenable number.

21467716 is a deficient number, since it is larger than the sum of its proper divisors (16372044).

21467716 is a wasteful number, since it uses less digits than its factorization.

21467716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38754 (or 38752 counting only the distinct ones).

The product of its digits is 14112, while the sum is 34.

The square root of 21467716 is about 4633.3266666619. The cubic root of 21467716 is about 277.9256395840.

The spelling of 21467716 in words is "twenty-one million, four hundred sixty-seven thousand, seven hundred sixteen".