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30388245342 = 2371355656127
BaseRepresentation
bin11100010011010001…
…111101001101011110
32220102210211210212020
4130103101331031132
5444213342322332
621543221321010
72124022552320
oct342321751536
986383753766
1030388245342
1111984410554
125a80b66166
132b3394c280
141683c2d610
15bccc6982c
hex71347d35e

30388245342 has 32 divisors (see below), whose sum is σ = 74801836032. Its totient is φ = 8014482144.

The previous prime is 30388245337. The next prime is 30388245359. The reversal of 30388245342 is 24354288303.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 30388245294 and 30388245303.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27827518 + ... + 27828609.

It is an arithmetic number, because the mean of its divisors is an integer number (2337557376).

Almost surely, 230388245342 is an apocalyptic number.

30388245342 is an abundant number, since it is smaller than the sum of its proper divisors (44413590690).

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

30388245342 is a wasteful number, since it uses less digits than its factorization.

30388245342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55656152.

The product of its (nonzero) digits is 552960, while the sum is 42.

The spelling of 30388245342 in words is "thirty billion, three hundred eighty-eight million, two hundred forty-five thousand, three hundred forty-two".

Divisors: 1 2 3 6 7 13 14 21 26 39 42 78 91 182 273 546 55656127 111312254 166968381 333936762 389592889 723529651 779185778 1168778667 1447059302 2170588953 2337557334 4341177906 5064707557 10129415114 15194122671 30388245342