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38500687780 = 22517131864407
BaseRepresentation
bin100011110110110100…
…011101111110100100
310200101011211120210021
4203312310131332210
51112322134002110
625404215204524
72532040306102
oct436664357644
9120334746707
1038500687780
11153676a8635
127565976744
133827571379
141c13406c72
1510050762da
hex8f6d1dfa4

38500687780 has 48 divisors (see below), whose sum is σ = 86261003136. Its totient is φ = 14383715840.

The previous prime is 38500687769. The next prime is 38500687783. The reversal of 38500687780 is 8778600583.

It is not an unprimeable number, because it can be changed into a prime (38500687783) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 387664 + ... + 476743.

It is an arithmetic number, because the mean of its divisors is an integer number (1797104232).

Almost surely, 238500687780 is an apocalyptic number.

It is an amenable number.

38500687780 is an abundant number, since it is smaller than the sum of its proper divisors (47760315356).

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

38500687780 is a wasteful number, since it uses less digits than its factorization.

38500687780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 864564 (or 864562 counting only the distinct ones).

The product of its (nonzero) digits is 2257920, while the sum is 52.

The spelling of 38500687780 in words is "thirty-eight billion, five hundred million, six hundred eighty-seven thousand, seven hundred eighty".

Divisors: 1 2 4 5 10 17 20 34 68 85 131 170 262 340 524 655 1310 2227 2620 4454 8908 11135 22270 44540 864407 1728814 3457628 4322035 8644070 14694919 17288140 29389838 58779676 73474595 113237317 146949190 226474634 293898380 452949268 566186585 1132373170 1925034389 2264746340 3850068778 7700137556 9625171945 19250343890 38500687780