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30530052530 = 2519499322013
BaseRepresentation
bin11100011011101110…
…111010000110110010
32220210200200100202022
4130123232322012302
51000011143140110
622005244551442
72130364110335
oct343356720662
986720610668
1030530052530
1111a4746737a
125b00552582
132b57140053
1416989c461c
15bda42b755
hex71bbba1b2

30530052530 has 32 divisors (see below), whose sum is σ = 57962520000. Its totient is φ = 11546062272.

The previous prime is 30530052523. The next prime is 30530052533. The reversal of 30530052530 is 3525003503.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 30530052530.

It is not an unprimeable number, because it can be changed into a prime (30530052533) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66197 + ... + 255816.

It is an arithmetic number, because the mean of its divisors is an integer number (1811328750).

Almost surely, 230530052530 is an apocalyptic number.

30530052530 is a deficient number, since it is larger than the sum of its proper divisors (27432467470).

30530052530 is a wasteful number, since it uses less digits than its factorization.

30530052530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322538.

The product of its (nonzero) digits is 6750, while the sum is 26.

The spelling of 30530052530 in words is "thirty billion, five hundred thirty million, fifty-two thousand, five hundred thirty".

Divisors: 1 2 5 10 19 38 95 190 499 998 2495 4990 9481 18962 47405 94810 322013 644026 1610065 3220130 6118247 12236494 30591235 61182470 160684487 321368974 803422435 1606844870 3053005253 6106010506 15265026265 30530052530