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70115293 = 17231031741
BaseRepresentation
bin1000010110111…
…01111111011101
311212221020002201
410023131333131
5120422142133
610542451501
71510653523
oct413357735
9155836081
1070115293
113663a726
121b593b91
13116ac151
149452313
15624ed7d
hex42ddfdd

70115293 has 16 divisors (see below), whose sum is σ = 78264576. Its totient is φ = 62472960.

The previous prime is 70115267. The next prime is 70115321. The reversal of 70115293 is 39251107.

It is not a de Polignac number, because 70115293 - 221 = 68018141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70115203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39403 + ... + 41143.

It is an arithmetic number, because the mean of its divisors is an integer number (4891536).

Almost surely, 270115293 is an apocalyptic number.

It is an amenable number.

70115293 is a deficient number, since it is larger than the sum of its proper divisors (8149283).

70115293 is a wasteful number, since it uses less digits than its factorization.

70115293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1884.

The product of its (nonzero) digits is 1890, while the sum is 28.

The square root of 70115293 is about 8373.4875052155. The cubic root of 70115293 is about 412.3546703225.

The spelling of 70115293 in words is "seventy million, one hundred fifteen thousand, two hundred ninety-three".

Divisors: 1 17 23 103 391 1741 1751 2369 29597 40043 40273 179323 680731 3048491 4124429 70115293