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70520060 = 22513271231
BaseRepresentation
bin1000011010000…
…00110011111100
311220200210100002
410031000303330
5121023120220
610555253432
71514260562
oct415006374
9156623302
1070520060
1136896846
121b74a278
13117c1460
149519a32
1562cec75
hex4340cfc

70520060 has 24 divisors (see below), whose sum is σ = 159484416. Its totient is φ = 26038080.

The previous prime is 70520059. The next prime is 70520081. The reversal of 70520060 is 6002507.

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 135356 + ... + 135875.

It is an arithmetic number, because the mean of its divisors is an integer number (6645184).

Almost surely, 270520060 is an apocalyptic number.

It is an amenable number.

70520060 is an abundant number, since it is smaller than the sum of its proper divisors (88964356).

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

70520060 is a wasteful number, since it uses less digits than its factorization.

70520060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271253 (or 271251 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 20.

The square root of 70520060 is about 8397.6222825274. The cubic root of 70520060 is about 413.1466392966.

Adding to 70520060 its reverse (6002507), we get a palindrome (76522567).

The spelling of 70520060 in words is "seventy million, five hundred twenty thousand, sixty".

Divisors: 1 2 4 5 10 13 20 26 52 65 130 260 271231 542462 1084924 1356155 2712310 3526003 5424620 7052006 14104012 17630015 35260030 70520060