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30108957 = 318775347
BaseRepresentation
bin111001011011…
…0110100011101
32002122200201120
41302312310131
530201441312
62553201153
7513631134
oct162666435
962580646
1030108957
1115aa533a
12a1001b9
136312768
143dda91b
15299b28c
hex1cb6d1d

30108957 has 8 divisors (see below), whose sum is σ = 40174176. Its totient is φ = 20058192.

The previous prime is 30108937. The next prime is 30109003. The reversal of 30108957 is 75980103.

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

It is not a de Polignac number, because 30108957 - 26 = 30108893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30108917) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2958 + ... + 8304.

It is an arithmetic number, because the mean of its divisors is an integer number (5021772).

Almost surely, 230108957 is an apocalyptic number.

It is an amenable number.

30108957 is a deficient number, since it is larger than the sum of its proper divisors (10065219).

30108957 is a wasteful number, since it uses less digits than its factorization.

30108957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7227.

The product of its (nonzero) digits is 7560, while the sum is 33.

The square root of 30108957 is about 5487.1629281442. The cubic root of 30108957 is about 311.0989680304.

The spelling of 30108957 in words is "thirty million, one hundred eight thousand, nine hundred fifty-seven".

Divisors: 1 3 1877 5347 5631 16041 10036319 30108957