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30666254 = 231494617
BaseRepresentation
bin111010011111…
…0111000001110
32010201000012012
41310332320032
530322310004
63013141222
7521441663
oct164767016
963630165
1030666254
1116346013
12a32a812
136479318
144103a6a
152a5b46e
hex1d3ee0e

30666254 has 8 divisors (see below), whose sum is σ = 47483328. Its totient is φ = 14838480.

The previous prime is 30666241. The next prime is 30666257. The reversal of 30666254 is 45266603.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 30666254.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30666257) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 247247 + ... + 247370.

It is an arithmetic number, because the mean of its divisors is an integer number (5935416).

Almost surely, 230666254 is an apocalyptic number.

30666254 is a deficient number, since it is larger than the sum of its proper divisors (16817074).

30666254 is a wasteful number, since it uses less digits than its factorization.

30666254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 494650.

The product of its (nonzero) digits is 25920, while the sum is 32.

The square root of 30666254 is about 5537.7119823985. The cubic root of 30666254 is about 313.0066584272.

The spelling of 30666254 in words is "thirty million, six hundred sixty-six thousand, two hundred fifty-four".

Divisors: 1 2 31 62 494617 989234 15333127 30666254