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70152905 = 5471372179
BaseRepresentation
bin1000010111001…
…11001011001001
311220000010200202
410023213023021
5120424343110
610543341545
71511201264
oct413471311
9156003622
1070152905
1136665a09
121b5b18b5
13116c32c4
149461cdb
15625b0a5
hex42e72c9

70152905 has 16 divisors (see below), whose sum is σ = 86641920. Its totient is φ = 54502272.

The previous prime is 70152893. The next prime is 70152911. The reversal of 70152905 is 50925107.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-70152905 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31106 + ... + 33284.

It is an arithmetic number, because the mean of its divisors is an integer number (5415120).

Almost surely, 270152905 is an apocalyptic number.

It is an amenable number.

70152905 is a deficient number, since it is larger than the sum of its proper divisors (16489015).

70152905 is a wasteful number, since it uses less digits than its factorization.

70152905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2368.

The product of its (nonzero) digits is 3150, while the sum is 29.

The square root of 70152905 is about 8375.7331022425. The cubic root of 70152905 is about 412.4283903854.

The spelling of 70152905 in words is "seventy million, one hundred fifty-two thousand, nine hundred five".

Divisors: 1 5 47 137 235 685 2179 6439 10895 32195 102413 298523 512065 1492615 14030581 70152905