21416883 has 8 divisors (see below), whose sum is σ = 29252496. Its totient is φ = 13929600.

The previous prime is 21416873. The next prime is 21416891. The reversal of 21416883 is 38861412.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21416883 - 2⁴ = 21416867 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21416803) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86938 + ... + 87183.

It is an arithmetic number, because the mean of its divisors is an integer number (3656562).

Almost surely, 2^21416883 is an apocalyptic number.

21416883 is a deficient number, since it is larger than the sum of its proper divisors (7835613).

21416883 is a wasteful number, since it uses less digits than its factorization.

21416883 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174165.

The product of its digits is 9216, while the sum is 33.

The square root of 21416883 is about 4627.8378320767. The cubic root of 21416883 is about 277.7061012517.

The spelling of 21416883 in words is "twenty-one million, four hundred sixteen thousand, eight hundred eighty-three".