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30238194 = 23742099
BaseRepresentation
bin111001101011…
…0010111110010
32002220021000010
41303112113302
530220110234
63000035350
7515010000
oct163262762
962807003
1030238194
1116083448
12a162b56
13635952c
144031a70
1529c46e9
hex1cd65f2

30238194 has 40 divisors (see below), whose sum is σ = 70585200. Its totient is φ = 8635368.

The previous prime is 30238193. The next prime is 30238259. The reversal of 30238194 is 49183203.

It is not an unprimeable number, because it can be changed into a prime (30238193) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 13357 + ... + 15455.

It is an arithmetic number, because the mean of its divisors is an integer number (1764630).

Almost surely, 230238194 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30238194, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35292600).

30238194 is an abundant number, since it is smaller than the sum of its proper divisors (40347006).

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

30238194 is an equidigital number, since it uses as much as digits as its factorization.

30238194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2132 (or 2111 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 30238194 is about 5498.9266225328. The cubic root of 30238194 is about 311.5434438419.

The spelling of 30238194 in words is "thirty million, two hundred thirty-eight thousand, one hundred ninety-four".

Divisors: 1 2 3 6 7 14 21 42 49 98 147 294 343 686 1029 2058 2099 2401 4198 4802 6297 7203 12594 14406 14693 29386 44079 88158 102851 205702 308553 617106 719957 1439914 2159871 4319742 5039699 10079398 15119097 30238194