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30752780054 = 21722730712979
BaseRepresentation
bin11100101001000000…
…100010111100010110
32221101012210002110212
4130221000202330112
51000440202430204
622043322445422
72136040213613
oct345100427426
987335702425
1030752780054
1112051162907
125b63063872
132b91324099
1416ba40150a
15beec74c6e
hex729022f16

30752780054 has 32 divisors (see below), whose sum is σ = 49221406080. Its totient is φ = 14360105088.

The previous prime is 30752780027. The next prime is 30752780057. The reversal of 30752780054 is 45008725703.

It is a junction number, because it is equal to n+sod(n) for n = 30752779993 and 30752780020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30752780057) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2362937 + ... + 2375915.

It is an arithmetic number, because the mean of its divisors is an integer number (1538168940).

Almost surely, 230752780054 is an apocalyptic number.

30752780054 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

30752780054 is a deficient number, since it is larger than the sum of its proper divisors (18468626026).

30752780054 is a wasteful number, since it uses less digits than its factorization.

30752780054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13532.

The product of its (nonzero) digits is 235200, while the sum is 41.

The spelling of 30752780054 in words is "thirty billion, seven hundred fifty-two million, seven hundred eighty thousand, fifty-four".

Divisors: 1 2 17 34 227 307 454 614 3859 5219 7718 10438 12979 25958 69689 139378 220643 441286 1184713 2369426 2946233 3984553 5892466 7969106 50085961 67737401 100171922 135474802 904493531 1808987062 15376390027 30752780054