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38886814240 = 2551251719417
BaseRepresentation
bin100100001101110101…
…011011001000100000
310201101002101211201021
4210031311123020200
51114120011023430
625510411215224
72544436316161
oct441565331040
9121332354637
1038886814240
111554565810a
127653147514
133889565c71
141c4c7d9768
151028de907a
hex90dd5b220

38886814240 has 48 divisors (see below), whose sum is σ = 91882170072. Its totient is φ = 15552681984.

The previous prime is 38886814207. The next prime is 38886814243. The reversal of 38886814240 is 4241868883.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 27783555856 + 11103258384 = 166684^2 + 105372^2 .

It is not an unprimeable number, because it can be changed into a prime (38886814243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1993012 + ... + 2012428.

Almost surely, 238886814240 is an apocalyptic number.

It is an amenable number.

38886814240 is an abundant number, since it is smaller than the sum of its proper divisors (52995355832).

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

38886814240 is a wasteful number, since it uses less digits than its factorization.

38886814240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31949 (or 31941 counting only the distinct ones).

The product of its (nonzero) digits is 2359296, while the sum is 52.

The spelling of 38886814240 in words is "thirty-eight billion, eight hundred eighty-six million, eight hundred fourteen thousand, two hundred forty".

Divisors: 1 2 4 5 8 10 16 20 32 40 80 160 12517 19417 25034 38834 50068 62585 77668 97085 100136 125170 155336 194170 200272 250340 310672 388340 400544 500680 621344 776680 1001360 1553360 2002720 3106720 243042589 486085178 972170356 1215212945 1944340712 2430425890 3888681424 4860851780 7777362848 9721703560 19443407120 38886814240