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30972454298 = 215486227149
BaseRepresentation
bin11100110110000110…
…100010010110011010
32221221112010200212222
4130312012202112122
51001412422014143
622121211104042
72144345342402
oct346606422632
987845120788
1030972454298
1112154163375
126004742022
132bc79a9446
1416db665802
15c141b8768
hex7361a259a

30972454298 has 4 divisors (see below), whose sum is σ = 46458681450. Its totient is φ = 15486227148.

The previous prime is 30972454297. The next prime is 30972454349. The reversal of 30972454298 is 89245427903.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 89245427903 = 154935760371.

It can be written as a sum of positive squares in only one way, i.e., 25002883129 + 5969571169 = 158123^2 + 77263^2 .

It is not an unprimeable number, because it can be changed into a prime (30972454297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7743113573 + ... + 7743113576.

Almost surely, 230972454298 is an apocalyptic number.

30972454298 is a deficient number, since it is larger than the sum of its proper divisors (15486227152).

30972454298 is a wasteful number, since it uses less digits than its factorization.

30972454298 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15486227151.

The product of its (nonzero) digits is 4354560, while the sum is 53.

The spelling of 30972454298 in words is "thirty billion, nine hundred seventy-two million, four hundred fifty-four thousand, two hundred ninety-eight".

Divisors: 1 2 15486227149 30972454298