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30344442400 = 2552172231209
BaseRepresentation
bin11100010000101010…
…110111001000100000
32220022202102101112001
4130100222313020200
5444121134124100
621535014413344
72122651335046
oct342052671040
986282371461
1030344442400
1111961712778
125a6a361254
132b2785377c
14167c0aa396
15bc8eb5d6a
hex710ab7220

30344442400 has 72 divisors (see below), whose sum is σ = 78435956340. Its totient is φ = 11423784960.

The previous prime is 30344442367. The next prime is 30344442419. The reversal of 30344442400 is 424444303.

It can be written as a sum of positive squares in 6 ways, for example, as 19058354704 + 11286087696 = 138052^2 + 106236^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1102005 + ... + 1129204.

Almost surely, 230344442400 is an apocalyptic number.

It is an amenable number.

30344442400 is an abundant number, since it is smaller than the sum of its proper divisors (48091513940).

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

30344442400 is a wasteful number, since it uses less digits than its factorization.

30344442400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2231246 (or 2231233 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 28.

Adding to 30344442400 its reverse (424444303), we get a palindrome (30768886703).

The spelling of 30344442400 in words is "thirty billion, three hundred forty-four million, four hundred forty-two thousand, four hundred".

Divisors: 1 2 4 5 8 10 16 17 20 25 32 34 40 50 68 80 85 100 136 160 170 200 272 340 400 425 544 680 800 850 1360 1700 2720 3400 6800 13600 2231209 4462418 8924836 11156045 17849672 22312090 35699344 37930553 44624180 55780225 71398688 75861106 89248360 111560450 151722212 178496720 189652765 223120900 303444424 356993440 379305530 446241800 606888848 758611060 892483600 948263825 1213777696 1517222120 1784967200 1896527650 3034444240 3793055300 6068888480 7586110600 15172221200 30344442400