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29281076972 = 2272896136109
BaseRepresentation
bin11011010001010010…
…011100011011101100
32210120122111211101022
4123101102130123230
5434431423430342
621241311033312
72054420022230
oct332122343354
983518454338
1029281076972
111146644a574
12581220b838
1329b845b864
1415bab865c0
15b659699d2
hex6d149c6ec

29281076972 has 24 divisors (see below), whose sum is σ = 58565797920. Its totient is φ = 12548252160.

The previous prime is 29281076971. The next prime is 29281076977. The reversal of 29281076972 is 27967018292.

It is not an unprimeable number, because it can be changed into a prime (29281076971) 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, 792854 + ... + 828962.

It is an arithmetic number, because the mean of its divisors is an integer number (2440241580).

Almost surely, 229281076972 is an apocalyptic number.

It is an amenable number.

29281076972 is an abundant number, since it is smaller than the sum of its proper divisors (29284720948).

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

29281076972 is a wasteful number, since it uses less digits than its factorization.

29281076972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65081 (or 65079 counting only the distinct ones).

The product of its (nonzero) digits is 1524096, while the sum is 53.

The spelling of 29281076972 in words is "twenty-nine billion, two hundred eighty-one million, seventy-six thousand, nine hundred seventy-two".

Divisors: 1 2 4 7 14 28 28961 36109 57922 72218 115844 144436 202727 252763 405454 505526 810908 1011052 1045752749 2091505498 4183010996 7320269243 14640538486 29281076972