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70142808 = 23310926813
BaseRepresentation
bin1000010111001…
…00101101011000
311212222121211210
410023210231120
5120424032213
610543223120
71511126661
oct413445530
9155877753
1070142808
113665936a
121b5a7aa0
13116bb828
14945c368
1562580c3
hex42e4b58

70142808 has 32 divisors (see below), whose sum is σ = 176972400. Its totient is φ = 23165568.

The previous prime is 70142803. The next prime is 70142819. The reversal of 70142808 is 80824107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70142803) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10791 + ... + 16022.

Almost surely, 270142808 is an apocalyptic number.

It is an amenable number.

70142808 is an abundant number, since it is smaller than the sum of its proper divisors (106829592).

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

70142808 is a wasteful number, since it uses less digits than its factorization.

70142808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26931 (or 26927 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 30.

The square root of 70142808 is about 8375.1303273442. The cubic root of 70142808 is about 412.4086027075.

The spelling of 70142808 in words is "seventy million, one hundred forty-two thousand, eight hundred eight".

Divisors: 1 2 3 4 6 8 12 24 109 218 327 436 654 872 1308 2616 26813 53626 80439 107252 160878 214504 321756 643512 2922617 5845234 8767851 11690468 17535702 23380936 35071404 70142808