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70388888672 = 2523313085067
BaseRepresentation
bin100000110001110000…
…0010011010001100000
320201200112010000211202
41001203200103101200
52123124023414142
652200342100332
75041205452604
oct1014340232140
9221615100752
1070388888672
1127940768973
121178511a6a8
136839b985ab
14359a527504
151c6e82c032
hex1063813460

70388888672 has 48 divisors (see below), whose sum is σ = 149267930112. Its totient is φ = 32578296960.

The previous prime is 70388888659. The next prime is 70388888693. The reversal of 70388888672 is 27688888307.

It is a junction number, because it is equal to n+sod(n) for n = 70388888599 and 70388888608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1519718 + ... + 1565349.

It is an arithmetic number, because the mean of its divisors is an integer number (3109748544).

Almost surely, 270388888672 is an apocalyptic number.

It is an amenable number.

70388888672 is an abundant number, since it is smaller than the sum of its proper divisors (78879041440).

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

70388888672 is a wasteful number, since it uses less digits than its factorization.

70388888672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3085131 (or 3085123 counting only the distinct ones).

The product of its (nonzero) digits is 57802752, while the sum is 65.

The spelling of 70388888672 in words is "seventy billion, three hundred eighty-eight million, eight hundred eighty-eight thousand, six hundred seventy-two".

Divisors: 1 2 4 8 16 23 31 32 46 62 92 124 184 248 368 496 713 736 992 1426 2852 5704 11408 22816 3085067 6170134 12340268 24680536 49361072 70956541 95637077 98722144 141913082 191274154 283826164 382548308 567652328 765096616 1135304656 1530193232 2199652771 2270609312 3060386464 4399305542 8798611084 17597222168 35194444336 70388888672