21467056 has 60 divisors (see below), whose sum is σ = 47789352. Its totient is φ = 9305088.

The previous prime is 21467029. The next prime is 21467071. The reversal of 21467056 is 65076412.

It is a happy number.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 45735 + ... + 46201.

Almost surely, 2^21467056 is an apocalyptic number.

21467056 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21467056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23894676).

21467056 is an abundant number, since it is smaller than the sum of its proper divisors (26322296).

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

21467056 is a wasteful number, since it uses less digits than its factorization.

21467056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 518 (or 499 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 21467056 is about 4633.2554429904. The cubic root of 21467056 is about 277.9227913878.

The spelling of 21467056 in words is "twenty-one million, four hundred sixty-seven thousand, fifty-six".