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30801672 = 23321138891
BaseRepresentation
bin111010101111…
…1111100001000
32010221212221200
41311133330020
530341123142
63020104200
7522544536
oct165377410
963855850
1030801672
1116428830
12a395060
1364c5b55
14413b156
152a8664c
hex1d5ff08

30801672 has 48 divisors (see below), whose sum is σ = 91007280. Its totient is φ = 9333600.

The previous prime is 30801643. The next prime is 30801703. The reversal of 30801672 is 27610803.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18654 + ... + 20237.

It is an arithmetic number, because the mean of its divisors is an integer number (1895985).

Almost surely, 230801672 is an apocalyptic number.

It is an amenable number.

30801672 is an abundant number, since it is smaller than the sum of its proper divisors (60205608).

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

30801672 is a wasteful number, since it uses less digits than its factorization.

30801672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38914 (or 38907 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 30801672 is about 5549.9254049041. The cubic root of 30801672 is about 313.4667134977.

The spelling of 30801672 in words is "thirty million, eight hundred one thousand, six hundred seventy-two".

Divisors: 1 2 3 4 6 8 9 11 12 18 22 24 33 36 44 66 72 88 99 132 198 264 396 792 38891 77782 116673 155564 233346 311128 350019 427801 466692 700038 855602 933384 1283403 1400076 1711204 2566806 2800152 3422408 3850209 5133612 7700418 10267224 15400836 30801672