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30945880158 = 237974387869
BaseRepresentation
bin11100110100100001…
…001010100001011110
32221212200010121000120
4130310201022201132
51001334121131113
622114421335410
72143603432644
oct346441124136
987780117016
1030945880158
1112140162876
125bb7867566
132bc23338bb
1416d7d09194
15c11bb9a23
hex73484a85e

30945880158 has 32 divisors (see below), whose sum is σ = 62760268800. Its totient is φ = 10170896736.

The previous prime is 30945880151. The next prime is 30945880213. The reversal of 30945880158 is 85108854903.

It is a self number, because there is not a number n which added to its sum of digits gives 30945880158.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30945880151) 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, 308248 + ... + 396116.

It is an arithmetic number, because the mean of its divisors is an integer number (1961258400).

Almost surely, 230945880158 is an apocalyptic number.

30945880158 is an abundant number, since it is smaller than the sum of its proper divisors (31814388642).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30945880158 is a wasteful number, since it uses less digits than its factorization.

30945880158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88696.

The product of its (nonzero) digits is 1382400, while the sum is 51.

The spelling of 30945880158 in words is "thirty billion, nine hundred forty-five million, eight hundred eighty thousand, one hundred fifty-eight".

Divisors: 1 2 3 6 79 158 237 474 743 1486 2229 4458 58697 87869 117394 175738 176091 263607 352182 527214 6941651 13883302 20824953 41649906 65286667 130573334 195860001 391720002 5157646693 10315293386 15472940079 30945880158