21880903 has 8 divisors (see below), whose sum is σ = 23904000. Its totient is φ = 19863480.

The previous prime is 21880879. The next prime is 21880919. The reversal of 21880903 is 30908812.

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

It is a cyclic number.

It is not a de Polignac number, because 21880903 - 2¹⁷ = 21749831 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21880973) 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, 13848 + ... + 15346.

It is an arithmetic number, because the mean of its divisors is an integer number (2988000).

Almost surely, 2^21880903 is an apocalyptic number.

21880903 is a deficient number, since it is larger than the sum of its proper divisors (2023097).

21880903 is a wasteful number, since it uses less digits than its factorization.

21880903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2837.

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 21880903 is about 4677.7027481446. The cubic root of 21880903 is about 279.6973899086.

The spelling of 21880903 in words is "twenty-one million, eight hundred eighty thousand, nine hundred three".