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30671370740 = 2253557431141
BaseRepresentation
bin11100100100001001…
…111111100111110100
32221011112121001220002
4130210021333213310
51000303332330430
622031253530432
72134031230643
oct344411774764
987145531802
1030671370740
111200a20988a
125b3b943a18
132b7a4bc3aa
1416ad68d35a
15be7a43845
hex72427f9f4

30671370740 has 24 divisors (see below), whose sum is σ = 64428135912. Its totient is φ = 12265070720.

The previous prime is 30671370661. The next prime is 30671370761. The reversal of 30671370740 is 4707317603.

It can be written as a sum of positive squares in 4 ways, for example, as 5340101776 + 25331268964 = 73076^2 + 159158^2 .

It is a junction number, because it is equal to n+sod(n) for n = 30671370694 and 30671370703.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 144431 + ... + 286710.

It is an arithmetic number, because the mean of its divisors is an integer number (2684505663).

Almost surely, 230671370740 is an apocalyptic number.

It is an amenable number.

30671370740 is an abundant number, since it is smaller than the sum of its proper divisors (33756765172).

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

30671370740 is a wasteful number, since it uses less digits than its factorization.

30671370740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434707 (or 434705 counting only the distinct ones).

The product of its (nonzero) digits is 74088, while the sum is 38.

The spelling of 30671370740 in words is "thirty billion, six hundred seventy-one million, three hundred seventy thousand, seven hundred forty".

Divisors: 1 2 4 5 10 20 3557 7114 14228 17785 35570 71140 431141 862282 1724564 2155705 4311410 8622820 1533568537 3067137074 6134274148 7667842685 15335685370 30671370740