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30747400907 = 239128650213
BaseRepresentation
bin11100101000101100…
…000001101011001011
32221100211122210200012
4130220230001223023
51000432313312112
622043011302135
72135643411146
oct345054015313
987324583605
1030747400907
1112049119433
125b612aa94b
132b9018c862
1416b980105d
15bee561022
hex728b01acb

30747400907 has 4 divisors (see below), whose sum is σ = 30876051360. Its totient is φ = 30618750456.

The previous prime is 30747400903. The next prime is 30747400919. The reversal of 30747400907 is 70900474703.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70900474703 = 174170616159.

It is a cyclic number.

It is not a de Polignac number, because 30747400907 - 22 = 30747400903 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30747400903) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64324868 + ... + 64325345.

It is an arithmetic number, because the mean of its divisors is an integer number (7719012840).

Almost surely, 230747400907 is an apocalyptic number.

30747400907 is a deficient number, since it is larger than the sum of its proper divisors (128650453).

30747400907 is a wasteful number, since it uses less digits than its factorization.

30747400907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128650452.

The product of its (nonzero) digits is 148176, while the sum is 41.

The spelling of 30747400907 in words is "thirty billion, seven hundred forty-seven million, four hundred thousand, nine hundred seven".

Divisors: 1 239 128650213 30747400907