21007282026 has 16 divisors (see below), whose sum is σ = 42022842624. Its totient is φ = 7001047584.

The previous prime is 21007281979. The next prime is 21007282027. The reversal of 21007282026 is 62028270012.

It is a junction number, because it is equal to n+sod(n) for n = 21007281984 and 21007282002.

It is not an unprimeable number, because it can be changed into a prime (21007282027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 311706 + ... + 373061.

It is an arithmetic number, because the mean of its divisors is an integer number (2626427664).

Almost surely, 2^21007282026 is an apocalyptic number.

21007282026 is an abundant number, since it is smaller than the sum of its proper divisors (21015560598).

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

21007282026 is a wasteful number, since it uses less digits than its factorization.

21007282026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 689885.

The product of its (nonzero) digits is 5376, while the sum is 30.

The spelling of 21007282026 in words is "twenty-one billion, seven million, two hundred eighty-two thousand, twenty-six".