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70124780 = 22511318749
BaseRepresentation
bin1000010111000…
…00010011101100
311212221201010002
410023200103230
5120422443110
610543003432
71511023265
oct413402354
9155851102
1070124780
1136646870
121b599578
13116b356b
14945596c
156252aa5
hex42e04ec

70124780 has 24 divisors (see below), whose sum is σ = 160650000. Its totient is φ = 25499840.

The previous prime is 70124771. The next prime is 70124797. The reversal of 70124780 is 8742107.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 159155 + ... + 159594.

It is an arithmetic number, because the mean of its divisors is an integer number (6693750).

Almost surely, 270124780 is an apocalyptic number.

It is an amenable number.

70124780 is an abundant number, since it is smaller than the sum of its proper divisors (90525220).

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

70124780 is a wasteful number, since it uses less digits than its factorization.

70124780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318769 (or 318767 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 29.

The square root of 70124780 is about 8374.0539764203. The cubic root of 70124780 is about 412.3732674652.

Adding to 70124780 its reverse (8742107), we get a palindrome (78866887).

The spelling of 70124780 in words is "seventy million, one hundred twenty-four thousand, seven hundred eighty".

Divisors: 1 2 4 5 10 11 20 22 44 55 110 220 318749 637498 1274996 1593745 3187490 3506239 6374980 7012478 14024956 17531195 35062390 70124780