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70015200020 = 225113251123427
BaseRepresentation
bin100000100110100111…
…0110010101100010100
320200201110221200101022
41001031032302230110
52121342342400040
652055312420312
75026020244403
oct1011516625424
9220643850338
1070015200020
1127769834077
121169bb47698
1367aa63a04c
143562a5163a
151c4bb146b5
hex104d3b2b14

70015200020 has 48 divisors (see below), whose sum is σ = 148925262528. Its totient is φ = 27647424000.

The previous prime is 70015200007. The next prime is 70015200107. The reversal of 70015200020 is 2000251007.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 505547 + ... + 628973.

It is an arithmetic number, because the mean of its divisors is an integer number (3102609636).

Almost surely, 270015200020 is an apocalyptic number.

It is an amenable number.

70015200020 is an abundant number, since it is smaller than the sum of its proper divisors (78910062508).

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

70015200020 is a wasteful number, since it uses less digits than its factorization.

70015200020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123800 (or 123798 counting only the distinct ones).

The product of its (nonzero) digits is 140, while the sum is 17.

Adding to 70015200020 its reverse (2000251007), we get a palindrome (72015451027).

The spelling of 70015200020 in words is "seventy billion, fifteen million, two hundred thousand, twenty".

Divisors: 1 2 4 5 10 20 113 226 251 452 502 565 1004 1130 1255 2260 2510 5020 28363 56726 113452 123427 141815 246854 283630 493708 567260 617135 1234270 2468540 13947251 27894502 30980177 55789004 61960354 69736255 123920708 139472510 154900885 278945020 309801770 619603540 3500760001 7001520002 14003040004 17503800005 35007600010 70015200020