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70307800 = 23521033413
BaseRepresentation
bin1000011000011…
…00111111011000
311220022000011121
410030030333120
5120444322200
610550535024
71512415003
oct414147730
9156260147
1070307800
1136761322
121b667474
1311748964
1494a253a
15628be1a
hex430cfd8

70307800 has 48 divisors (see below), whose sum is σ = 165101040. Its totient is φ = 27841920.

The previous prime is 70307791. The next prime is 70307813. The reversal of 70307800 is 870307.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 18894 + ... + 22306.

It is an arithmetic number, because the mean of its divisors is an integer number (3439605).

Almost surely, 270307800 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 70307800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82550520).

70307800 is an abundant number, since it is smaller than the sum of its proper divisors (94793240).

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

70307800 is a wasteful number, since it uses less digits than its factorization.

70307800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3532 (or 3523 counting only the distinct ones).

The product of its (nonzero) digits is 1176, while the sum is 25.

The square root of 70307800 is about 8384.9746570875. The cubic root of 70307800 is about 412.7317094281.

The spelling of 70307800 in words is "seventy million, three hundred seven thousand, eight hundred".

Divisors: 1 2 4 5 8 10 20 25 40 50 100 103 200 206 412 515 824 1030 2060 2575 3413 4120 5150 6826 10300 13652 17065 20600 27304 34130 68260 85325 136520 170650 341300 351539 682600 703078 1406156 1757695 2812312 3515390 7030780 8788475 14061560 17576950 35153900 70307800