21875414 has 8 divisors (see below), whose sum is σ = 35796168. Its totient is φ = 9943360.

The previous prime is 21875389. The next prime is 21875419. The reversal of 21875414 is 41457812.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21875419) 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, 497147 + ... + 497190.

It is an arithmetic number, because the mean of its divisors is an integer number (4474521).

Almost surely, 2^21875414 is an apocalyptic number.

21875414 is a deficient number, since it is larger than the sum of its proper divisors (13920754).

21875414 is a wasteful number, since it uses less digits than its factorization.

21875414 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 994350.

The product of its digits is 8960, while the sum is 32.

The square root of 21875414 is about 4677.1159917197. The cubic root of 21875414 is about 279.6739998415.

The spelling of 21875414 in words is "twenty-one million, eight hundred seventy-five thousand, four hundred fourteen".