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70248830 = 2567104849
BaseRepresentation
bin1000010111111…
…10100101111110
311220012000021112
410023332211332
5120440430310
610545402022
71512051041
oct413764576
9156160245
1070248830
1136720a93
121b639312
1311727b72
149488c58
156279705
hex42fe97e

70248830 has 16 divisors (see below), whose sum is σ = 128336400. Its totient is φ = 27679872.

The previous prime is 70248803. The next prime is 70248839. The reversal of 70248830 is 3884207.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70248839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51755 + ... + 53094.

It is an arithmetic number, because the mean of its divisors is an integer number (8021025).

Almost surely, 270248830 is an apocalyptic number.

70248830 is a deficient number, since it is larger than the sum of its proper divisors (58087570).

70248830 is a wasteful number, since it uses less digits than its factorization.

70248830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104923.

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 70248830 is about 8381.4575104811. The cubic root of 70248830 is about 412.6162855504.

The spelling of 70248830 in words is "seventy million, two hundred forty-eight thousand, eight hundred thirty".

Divisors: 1 2 5 10 67 134 335 670 104849 209698 524245 1048490 7024883 14049766 35124415 70248830