21082294 has 8 divisors (see below), whose sum is σ = 32643648. Its totient is φ = 10201080.

The previous prime is 21082291. The next prime is 21082301. The reversal of 21082294 is 49228012.

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 (21082291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 169957 + ... + 170080.

It is an arithmetic number, because the mean of its divisors is an integer number (4080456).

Almost surely, 2^21082294 is an apocalyptic number.

21082294 is a deficient number, since it is larger than the sum of its proper divisors (11561354).

21082294 is a wasteful number, since it uses less digits than its factorization.

21082294 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340070.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 21082294 is about 4591.5459270272. The cubic root of 21082294 is about 276.2523334706.

The spelling of 21082294 in words is "twenty-one million, eighty-two thousand, two hundred ninety-four".