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70115760 = 243351113227
BaseRepresentation
bin1000010110111…
…10000110110000
311212221020202000
410023132012300
5120422201020
610542454000
71510655061
oct413360660
9155836660
1070115760
1136640010
121b594300
13116ac420
149452568
156250090
hex42de1b0

70115760 has 320 divisors, whose sum is σ = 284981760. Its totient is φ = 15621120.

The previous prime is 70115743. The next prime is 70115761. The reversal of 70115760 is 6751107.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (70115761) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 308767 + ... + 308993.

It is an arithmetic number, because the mean of its divisors is an integer number (890568).

Almost surely, 270115760 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70115760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (142490880).

70115760 is an abundant number, since it is smaller than the sum of its proper divisors (214866000).

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

70115760 is a wasteful number, since it uses less digits than its factorization.

70115760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273 (or 261 counting only the distinct ones).

The product of its (nonzero) digits is 1470, while the sum is 27.

The square root of 70115760 is about 8373.5153908021. The cubic root of 70115760 is about 412.3555858109.

Adding to 70115760 its reverse (6751107), we get a palindrome (76866867).

It can be divided in two parts, 701 and 15760, that added together give a palindrome (16461).

The spelling of 70115760 in words is "seventy million, one hundred fifteen thousand, seven hundred sixty".