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423640134 = 232832331217
BaseRepresentation
bin11001010000000…
…011110001000110
31002112011011000100
4121100003301012
51331422441014
6110012024530
713332611301
oct3120036106
91075134010
10423640134
111a8152115
12b9a62146
13699ca848
1440399b38
15272d3009
hex19403c46

423640134 has 48 divisors (see below), whose sum is σ = 933699312. Its totient is φ = 138799104.

The previous prime is 423640117. The next prime is 423640177. The reversal of 423640134 is 431046324.

423640134 is a `hidden beast` number, since 4 + 2 + 3 + 640 + 13 + 4 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 423640098 and 423640107.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 347494 + ... + 348710.

It is an arithmetic number, because the mean of its divisors is an integer number (19452069).

Almost surely, 2423640134 is an apocalyptic number.

423640134 is an abundant number, since it is smaller than the sum of its proper divisors (510059178).

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

423640134 is a wasteful number, since it uses less digits than its factorization.

423640134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1541 (or 1538 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

The square root of 423640134 is about 20582.5201080917. The cubic root of 423640134 is about 751.0445498787.

Adding to 423640134 its reverse (431046324), we get a palindrome (854686458).

The spelling of 423640134 in words is "four hundred twenty-three million, six hundred forty thousand, one hundred thirty-four".

Divisors: 1 2 3 6 9 18 83 166 233 249 466 498 699 747 1217 1398 1494 2097 2434 3651 4194 7302 10953 19339 21906 38678 58017 101011 116034 174051 202022 283561 303033 348102 567122 606066 850683 909099 1701366 1818198 2552049 5104098 23535563 47071126 70606689 141213378 211820067 423640134