21141446 has 8 divisors (see below), whose sum is σ = 32387040. Its totient is φ = 10345768.

The previous prime is 21141437. The next prime is 21141451. The reversal of 21141446 is 64414112.

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 an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112361 + ... + 112548.

It is an arithmetic number, because the mean of its divisors is an integer number (4048380).

Almost surely, 2^21141446 is an apocalyptic number.

21141446 is a deficient number, since it is larger than the sum of its proper divisors (11245594).

21141446 is a wasteful number, since it uses less digits than its factorization.

21141446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224958.

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

The square root of 21141446 is about 4597.9828185847. The cubic root of 21141446 is about 276.5104587472.

Adding to 21141446 its reverse (64414112), we get a palindrome (85555558).

The spelling of 21141446 in words is "twenty-one million, one hundred forty-one thousand, four hundred forty-six".