21301058 has 16 divisors (see below), whose sum is σ = 33433344. Its totient is φ = 10167840.

The previous prime is 21301057. The next prime is 21301069. The reversal of 21301058 is 85010312.

It is not an unprimeable number, because it can be changed into a prime (21301057) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1091 + ... + 6617.

It is an arithmetic number, because the mean of its divisors is an integer number (2089584).

Almost surely, 2^21301058 is an apocalyptic number.

21301058 is a deficient number, since it is larger than the sum of its proper divisors (12132286).

21301058 is a wasteful number, since it uses less digits than its factorization.

21301058 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5617.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 21301058 is about 4615.3069237051. The cubic root of 21301058 is about 277.2045737324.

The spelling of 21301058 in words is "twenty-one million, three hundred one thousand, fifty-eight".