20417839272 has 24 divisors (see below), whose sum is σ = 55298314890. Its totient is φ = 6805946400.

The previous prime is 20417839237. The next prime is 20417839327. The reversal of 20417839272 is 27293871402.

20417839272 is a `hidden beast` number, since 2 + 0 + 417 + 83 + 92 + 72 = 666.

It can be written as a sum of positive squares in only one way, i.e., 12563271396 + 7854567876 = 112086^2 + 88626^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 141790479 + ... + 141790622.

Almost surely, 2^20417839272 is an apocalyptic number.

It is an amenable number.

20417839272 is an abundant number, since it is smaller than the sum of its proper divisors (34880475618).

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

20417839272 is a wasteful number, since it uses less digits than its factorization.

20417839272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283581113 (or 283581106 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 45.

The spelling of 20417839272 in words is "twenty billion, four hundred seventeen million, eight hundred thirty-nine thousand, two hundred seventy-two".