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30774529788 = 2232564544149
BaseRepresentation
bin11100101010010011…
…100000111011111100
32221102201201002111120
4130222103200323330
51001011234423123
622045420550540
72136423121122
oct345223407374
987381632446
1030774529788
11120624687a2
125b6a3b2450
132b9599aa52
1416bd263912
15c01b1e2e3
hex72a4e0efc

30774529788 has 12 divisors (see below), whose sum is σ = 71807236200. Its totient is φ = 10258176592.

The previous prime is 30774529757. The next prime is 30774529817. The reversal of 30774529788 is 88792547703.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 1282272063 + ... + 1282272086.

It is an arithmetic number, because the mean of its divisors is an integer number (5983936350).

Almost surely, 230774529788 is an apocalyptic number.

It is an amenable number.

30774529788 is an abundant number, since it is smaller than the sum of its proper divisors (41032706412).

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

30774529788 is a wasteful number, since it uses less digits than its factorization.

30774529788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2564544156 (or 2564544154 counting only the distinct ones).

The product of its (nonzero) digits is 23708160, while the sum is 60.

The spelling of 30774529788 in words is "thirty billion, seven hundred seventy-four million, five hundred twenty-nine thousand, seven hundred eighty-eight".

Divisors: 1 2 3 4 6 12 2564544149 5129088298 7693632447 10258176596 15387264894 30774529788