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70023079 = 7311512137
BaseRepresentation
bin1000010110001…
…11011110100111
311212202112121101
410023013132213
5120411214304
610540500531
71510120630
oct413073647
9155675541
1070023079
1136587415
121b54a747
1311679199
14942a887
1562328a4
hex42c77a7

70023079 has 16 divisors (see below), whose sum is σ = 83193856. Its totient is φ = 57672000.

The previous prime is 70023077. The next prime is 70023089. The reversal of 70023079 is 97032007.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 70023079 - 21 = 70023077 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 (70023071) 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, 31699 + ... + 33835.

It is an arithmetic number, because the mean of its divisors is an integer number (5199616).

Almost surely, 270023079 is an apocalyptic number.

70023079 is a deficient number, since it is larger than the sum of its proper divisors (13170777).

70023079 is a wasteful number, since it uses less digits than its factorization.

70023079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2326.

The product of its (nonzero) digits is 2646, while the sum is 28.

The square root of 70023079 is about 8367.9793857299. The cubic root of 70023079 is about 412.1738179295.

The spelling of 70023079 in words is "seventy million, twenty-three thousand, seventy-nine".

Divisors: 1 7 31 151 217 1057 2137 4681 14959 32767 66247 322687 463729 2258809 10003297 70023079