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30302906929 = 171782523937
BaseRepresentation
bin11100001110001100…
…011010101000110001
32220012212021011120021
4130032030122220301
5444030021010204
621530532243441
72121635313301
oct341614325061
986185234507
1030302906929
1111940223539
125a58470581
132b1c070079
141676777601
15bc550e154
hex70e31aa31

30302906929 has 4 divisors (see below), whose sum is σ = 32085430884. Its totient is φ = 28520382976.

The previous prime is 30302906927. The next prime is 30302906951. The reversal of 30302906929 is 92960920303.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 92960920303 = 517691795687.

It can be written as a sum of positive squares in 2 ways, for example, as 18136816929 + 12166090000 = 134673^2 + 110300^2 .

It is a cyclic number.

It is not a de Polignac number, because 30302906929 - 21 = 30302906927 is a prime.

It is a super-2 number, since 2×303029069292 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30302906927) 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, 891261952 + ... + 891261985.

It is an arithmetic number, because the mean of its divisors is an integer number (8021357721).

Almost surely, 230302906929 is an apocalyptic number.

It is an amenable number.

30302906929 is a deficient number, since it is larger than the sum of its proper divisors (1782523955).

30302906929 is a wasteful number, since it uses less digits than its factorization.

30302906929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1782523954.

The product of its (nonzero) digits is 157464, while the sum is 43.

The spelling of 30302906929 in words is "thirty billion, three hundred two million, nine hundred six thousand, nine hundred twenty-nine".

Divisors: 1 17 1782523937 30302906929