20633913028 has 12 divisors (see below), whose sum is σ = 36113587132. Its totient is φ = 10315745280.

The previous prime is 20633913023. The next prime is 20633913029. The reversal of 20633913028 is 82031933602.

It can be written as a sum of positive squares in 2 ways, for example, as 5299548804 + 15334364224 = 72798^2 + 123832^2 .

It is a super-3 number, since 3×20633913028³ (a number of 32 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (20633913023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 263925 + ... + 333052.

Almost surely, 2^20633913028 is an apocalyptic number.

It is an amenable number.

20633913028 is a deficient number, since it is larger than the sum of its proper divisors (15479674104).

20633913028 is a wasteful number, since it uses less digits than its factorization.

20633913028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 605622 (or 605620 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 37.

It can be divided in two parts, 20633 and 913028, that added together give a triangular number (933661 = T₁₃₆₆).

The spelling of 20633913028 in words is "twenty billion, six hundred thirty-three million, nine hundred thirteen thousand, twenty-eight".