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30108948 = 2232509079
BaseRepresentation
bin111001011011…
…0110100010100
32002122200201020
41302312310110
530201441243
62553201140
7513631122
oct162666424
962580636
1030108948
1115aa5331
12a1001b0
13631275c
143dda912
15299b283
hex1cb6d14

30108948 has 12 divisors (see below), whose sum is σ = 70254240. Its totient is φ = 10036312.

The previous prime is 30108937. The next prime is 30109003. The reversal of 30108948 is 84980103.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1254528 + ... + 1254551.

It is an arithmetic number, because the mean of its divisors is an integer number (5854520).

Almost surely, 230108948 is an apocalyptic number.

It is an amenable number.

30108948 is an abundant number, since it is smaller than the sum of its proper divisors (40145292).

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

30108948 is a wasteful number, since it uses less digits than its factorization.

30108948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2509086 (or 2509084 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 30108948 is about 5487.1621080482. The cubic root of 30108948 is about 311.0989370331.

The spelling of 30108948 in words is "thirty million, one hundred eight thousand, nine hundred forty-eight".

Divisors: 1 2 3 4 6 12 2509079 5018158 7527237 10036316 15054474 30108948