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70970130 = 23257311219
BaseRepresentation
bin1000011101011…
…10101100010010
311221112122201100
410032232230102
5121132021010
611013045230
71521144000
oct416565422
9157478640
1070970130
1137073a00
121b926816
131191b27a
1495d5a70
15636d2c0
hex43aeb12

70970130 has 288 divisors, whose sum is σ = 248976000. Its totient is φ = 13970880.

The previous prime is 70970117. The next prime is 70970131. The reversal of 70970130 is 3107907.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 70970094 and 70970103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70970131) by changing a digit.

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 143 ways as a sum of consecutive naturals, for example, 3735261 + ... + 3735279.

It is an arithmetic number, because the mean of its divisors is an integer number (864500).

Almost surely, 270970130 is an apocalyptic number.

70970130 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 70970130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (124488000).

70970130 is an abundant number, since it is smaller than the sum of its proper divisors (178005870).

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

70970130 is a wasteful number, since it uses less digits than its factorization.

70970130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75 (or 47 counting only the distinct ones).

The product of its (nonzero) digits is 1323, while the sum is 27.

The square root of 70970130 is about 8424.3771283104. The cubic root of 70970130 is about 414.0236981464.

The spelling of 70970130 in words is "seventy million, nine hundred seventy thousand, one hundred thirty".