21283046 has 8 divisors (see below), whose sum is σ = 32168664. Its totient is φ = 10560160.

The previous prime is 21283039. The next prime is 21283091. The reversal of 21283046 is 64038212.

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

It is a Curzon number.

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, 40355 + ... + 40878.

It is an arithmetic number, because the mean of its divisors is an integer number (4021083).

Almost surely, 2^21283046 is an apocalyptic number.

21283046 is a deficient number, since it is larger than the sum of its proper divisors (10885618).

21283046 is a wasteful number, since it uses less digits than its factorization.

21283046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81366.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 21283046 is about 4613.3551781756. The cubic root of 21283046 is about 277.1264177273.

The spelling of 21283046 in words is "twenty-one million, two hundred eighty-three thousand, forty-six".