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30912100946 = 219778457109
BaseRepresentation
bin11100110010100000…
…010011101001010010
32221210022120102122122
4130302200103221102
51001301444212241
622111213334242
72143013344166
oct346240235122
987708512578
1030912100946
1112123090a71
125ba8497382
132bb83376bc
1416d3634ca6
15c0dc4604b
hex732813a52

30912100946 has 8 divisors (see below), whose sum is σ = 46603523340. Its totient is φ = 15377593168.

The previous prime is 30912100937. The next prime is 30912100949. The reversal of 30912100946 is 64900121903.

It can be written as a sum of positive squares in 2 ways, for example, as 29271445921 + 1640655025 = 171089^2 + 40505^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (30912100949) 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, 39228161 + ... + 39228948.

Almost surely, 230912100946 is an apocalyptic number.

30912100946 is a deficient number, since it is larger than the sum of its proper divisors (15691422394).

30912100946 is a wasteful number, since it uses less digits than its factorization.

30912100946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78457308.

The product of its (nonzero) digits is 11664, while the sum is 35.

The spelling of 30912100946 in words is "thirty billion, nine hundred twelve million, one hundred thousand, nine hundred forty-six".

Divisors: 1 2 197 394 78457109 156914218 15456050473 30912100946