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30842130387 = 327752171237
BaseRepresentation
bin11100101110010101…
…011000111111010011
32221121102220120002110
4130232111120333103
51001131041133022
622100233520403
72141203532325
oct345625307723
987542816073
1030842130387
1112097640062
125b88b73103
132ba69a93c3
1416c821d615
15c07a2400c
hex72e558fd3

30842130387 has 16 divisors (see below), whose sum is σ = 41351094432. Its totient is φ = 20447581440.

The previous prime is 30842130383. The next prime is 30842130563. The reversal of 30842130387 is 78303124803.

It is not a de Polignac number, because 30842130387 - 22 = 30842130383 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30842130383) 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, 397333 + ... + 468569.

It is an arithmetic number, because the mean of its divisors is an integer number (2584443402).

Almost surely, 230842130387 is an apocalyptic number.

30842130387 is a deficient number, since it is larger than the sum of its proper divisors (10508964045).

30842130387 is a wasteful number, since it uses less digits than its factorization.

30842130387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72038.

The product of its (nonzero) digits is 96768, while the sum is 39.

The spelling of 30842130387 in words is "thirty billion, eight hundred forty-two million, one hundred thirty thousand, three hundred eighty-seven".

Divisors: 1 3 277 521 831 1563 71237 144317 213711 432951 19732649 37114477 59197947 111343431 10280710129 30842130387