21146414 has 8 divisors (see below), whose sum is σ = 31776888. Its totient is φ = 10554120.

The previous prime is 21146399. The next prime is 21146501. The reversal of 21146414 is 41464112.

It is a happy number.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 21146414.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8117 + ... + 10400.

It is an arithmetic number, because the mean of its divisors is an integer number (3972111).

Almost surely, 2^21146414 is an apocalyptic number.

21146414 is a deficient number, since it is larger than the sum of its proper divisors (10630474).

21146414 is a wasteful number, since it uses less digits than its factorization.

21146414 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19090.

The product of its digits is 768, while the sum is 23.

The square root of 21146414 is about 4598.5230237545. The cubic root of 21146414 is about 276.5321159913.

The spelling of 21146414 in words is "twenty-one million, one hundred forty-six thousand, four hundred fourteen".