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30205780192 = 257791706927
BaseRepresentation
bin11100001000011001…
…111010000011100000
32212222002111121201201
4130020121322003200
5443330134431232
621513142410544
72116345616050
oct341031720340
985862447651
1030205780192
11118a0414805
125a2ba30a54
132b04bc4323
1416678d3560
15bbbc25be7
hex70867a0e0

30205780192 has 48 divisors (see below), whose sum is σ = 68823336960. Its totient is φ = 12781461888.

The previous prime is 30205780159. The next prime is 30205780201. The reversal of 30205780192 is 29108750203.

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, 835768 + ... + 871159.

It is an arithmetic number, because the mean of its divisors is an integer number (1433819520).

Almost surely, 230205780192 is an apocalyptic number.

30205780192 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

30205780192 is an abundant number, since it is smaller than the sum of its proper divisors (38617556768).

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

30205780192 is a wasteful number, since it uses less digits than its factorization.

30205780192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1707023 (or 1707015 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 37.

The spelling of 30205780192 in words is "thirty billion, two hundred five million, seven hundred eighty thousand, one hundred ninety-two".

Divisors: 1 2 4 7 8 14 16 28 32 56 79 112 158 224 316 553 632 1106 1264 2212 2528 4424 8848 17696 1706927 3413854 6827708 11948489 13655416 23896978 27310832 47793956 54621664 95587912 134847233 191175824 269694466 382351648 539388932 943930631 1078777864 1887861262 2157555728 3775722524 4315111456 7551445048 15102890096 30205780192