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72933792680 = 2357260477831
BaseRepresentation
bin100001111101100110…
…0010101101110101000
320222020212210112211202
41003323030111232220
52143332022331210
653301052143332
75161240003040
oct1037314255650
9228225715752
1072933792680
1128a27251a21
1212175467b48
136b541ba758
14375c506720
151d6ce779a5
hex10fb315ba8

72933792680 has 32 divisors (see below), whose sum is σ = 187544039040. Its totient is φ = 25005871680.

The previous prime is 72933792671. The next prime is 72933792691. The reversal of 72933792680 is 8629733927.

It is a happy number.

It is a super-2 number, since 2×729337926802 (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 130238636 + ... + 130239195.

It is an arithmetic number, because the mean of its divisors is an integer number (5860751220).

Almost surely, 272933792680 is an apocalyptic number.

72933792680 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

72933792680 is an abundant number, since it is smaller than the sum of its proper divisors (114610246360).

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

72933792680 is a wasteful number, since it uses less digits than its factorization.

72933792680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260477849 (or 260477845 counting only the distinct ones).

The product of its (nonzero) digits is 6858432, while the sum is 56.

It can be divided in two parts, 7293 and 3792680, that added together give a palindrome (3799973).

The spelling of 72933792680 in words is "seventy-two billion, nine hundred thirty-three million, seven hundred ninety-two thousand, six hundred eighty".

Divisors: 1 2 4 5 7 8 10 14 20 28 35 40 56 70 140 280 260477831 520955662 1041911324 1302389155 1823344817 2083822648 2604778310 3646689634 5209556620 7293379268 9116724085 10419113240 14586758536 18233448170 36466896340 72933792680