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30764792975 = 527175798817
BaseRepresentation
bin11100101001101110…
…010111110010001111
32221102001101102002212
4130221232113302033
51001001241333400
622044432141035
72136244265660
oct345156276217
987361342085
1030764792975
1112057a18344
125b6709777b
132b9396bc17
1416bbc4b367
15c00d49335
hex729b97c8f

30764792975 has 12 divisors (see below), whose sum is σ = 43598106864. Its totient is φ = 21095857920.

The previous prime is 30764792899. The next prime is 30764792977. The reversal of 30764792975 is 57929746703.

It is not a de Polignac number, because 30764792975 - 28 = 30764792719 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30764792977) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 87899234 + ... + 87899583.

It is an arithmetic number, because the mean of its divisors is an integer number (3633175572).

Almost surely, 230764792975 is an apocalyptic number.

30764792975 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

30764792975 is a deficient number, since it is larger than the sum of its proper divisors (12833313889).

30764792975 is a wasteful number, since it uses less digits than its factorization.

30764792975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175798834 (or 175798829 counting only the distinct ones).

The product of its (nonzero) digits is 20003760, while the sum is 59.

The spelling of 30764792975 in words is "thirty billion, seven hundred sixty-four million, seven hundred ninety-two thousand, nine hundred seventy-five".

Divisors: 1 5 7 25 35 175 175798817 878994085 1230591719 4394970425 6152958595 30764792975