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30809854372 = 22113834434127
BaseRepresentation
bin11100101100011010…
…010001000110100100
32221112012011202201111
4130230122101012210
51001044310314442
622053122034404
72140332304213
oct345432210644
987465152644
1030809854372
11120803a5670
125b7a1a8a04
132ba00b847b
1416c3c1b07a
15c04c9ab17
hex72c6911a4

30809854372 has 48 divisors (see below), whose sum is σ = 59119828992. Its totient is φ = 13933006880.

The previous prime is 30809854367. The next prime is 30809854373. The reversal of 30809854372 is 27345890803.

It is not an unprimeable number, because it can be changed into a prime (30809854373) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7463373 + ... + 7467499.

It is an arithmetic number, because the mean of its divisors is an integer number (1231663104).

Almost surely, 230809854372 is an apocalyptic number.

It is an amenable number.

30809854372 is a deficient number, since it is larger than the sum of its proper divisors (28309974620).

30809854372 is a wasteful number, since it uses less digits than its factorization.

30809854372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4968 (or 4966 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 49.

The spelling of 30809854372 in words is "thirty billion, eight hundred nine million, eight hundred fifty-four thousand, three hundred seventy-two".

Divisors: 1 2 4 11 22 44 383 443 766 886 1532 1772 4127 4213 4873 8254 8426 9746 16508 16852 19492 45397 90794 169669 181588 339338 678676 1580641 1828261 1866359 3161282 3656522 3732718 6322564 7313044 7465436 17387051 20110871 34774102 40221742 69548204 80443484 700223963 1400447926 2800895852 7702463593 15404927186 30809854372