21359058 has 16 divisors (see below), whose sum is σ = 48820800. Its totient is φ = 6102576.

The previous prime is 21359057. The next prime is 21359069. The reversal of 21359058 is 85095312.

It is not an unprimeable number, because it can be changed into a prime (21359057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 254233 + ... + 254316.

It is an arithmetic number, because the mean of its divisors is an integer number (3051300).

Almost surely, 2^21359058 is an apocalyptic number.

21359058 is an abundant number, since it is smaller than the sum of its proper divisors (27461742).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21359058 is a wasteful number, since it uses less digits than its factorization.

21359058 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 508561.

The product of its (nonzero) digits is 10800, while the sum is 33.

The square root of 21359058 is about 4621.5860913760. The cubic root of 21359058 is about 277.4559430098.

The spelling of 21359058 in words is "twenty-one million, three hundred fifty-nine thousand, fifty-eight".