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20795924900 = 22521712232897
BaseRepresentation
bin10011010111100010…
…001010000110100100
31222200022012102221202
4103113202022012210
5320042224044100
613315320502032
71334225305442
oct232742120644
958608172852
1020795924900
1189018371a3
12404461a918
131c65561a0a
141013cadb92
1581aa8a7d5
hex4d788a1a4

20795924900 has 36 divisors (see below), whose sum is σ = 47781699588. Its totient is φ = 7829053440.

The previous prime is 20795924893. The next prime is 20795924909. The reversal of 20795924900 is 942959702.

It can be written as a sum of positive squares in 6 ways, for example, as 2636206336 + 18159718564 = 51344^2 + 134758^2 .

It is not an unprimeable number, because it can be changed into a prime (20795924909) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6114749 + ... + 6118148.

It is an arithmetic number, because the mean of its divisors is an integer number (1327269433).

Almost surely, 220795924900 is an apocalyptic number.

20795924900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20795924900 is an abundant number, since it is smaller than the sum of its proper divisors (26985774688).

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

20795924900 is a wasteful number, since it uses less digits than its factorization.

20795924900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12232928 (or 12232921 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 47.

The spelling of 20795924900 in words is "twenty billion, seven hundred ninety-five million, nine hundred twenty-four thousand, nine hundred".

Divisors: 1 2 4 5 10 17 20 25 34 50 68 85 100 170 340 425 850 1700 12232897 24465794 48931588 61164485 122328970 207959249 244657940 305822425 415918498 611644850 831836996 1039796245 1223289700 2079592490 4159184980 5198981225 10397962450 20795924900