21106294 has 8 divisors (see below), whose sum is σ = 34537608. Its totient is φ = 9593760.

The previous prime is 21106291. The next prime is 21106301. The reversal of 21106294 is 49260112.

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 (21106291) 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, 479667 + ... + 479710.

It is an arithmetic number, because the mean of its divisors is an integer number (4317201).

Almost surely, 2^21106294 is an apocalyptic number.

21106294 is a deficient number, since it is larger than the sum of its proper divisors (13431314).

21106294 is a wasteful number, since it uses less digits than its factorization.

21106294 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 959390.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 21106294 is about 4594.1586825011. The cubic root of 21106294 is about 276.3571219045.

The spelling of 21106294 in words is "twenty-one million, one hundred six thousand, two hundred ninety-four".