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30690854580 = 223519715671657
BaseRepresentation
bin11100100101010100…
…010100011010110100
32221012220020221200210
4130211110110122310
51000323324321310
622033231305420
72134355650101
oct344524243264
987186227623
1030690854580
111201a207331
125b4637b270
132b815518a9
1416b20c1aa8
15be95e1820
hex7255146b4

30690854580 has 96 divisors (see below), whose sum is σ = 86477884416. Its totient is φ = 8132576256.

The previous prime is 30690854569. The next prime is 30690854591. The reversal of 30690854580 is 8545809603.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (30690854569) and next prime (30690854591).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18521112 + ... + 18522768.

It is an arithmetic number, because the mean of its divisors is an integer number (900811296).

Almost surely, 230690854580 is an apocalyptic number.

30690854580 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30690854580 is an abundant number, since it is smaller than the sum of its proper divisors (55787029836).

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

30690854580 is a wasteful number, since it uses less digits than its factorization.

30690854580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3433 (or 3431 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 48.

The spelling of 30690854580 in words is "thirty billion, six hundred ninety million, eight hundred fifty-four thousand, five hundred eighty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 197 394 591 788 985 1182 1567 1657 1970 2364 2955 3134 3314 3940 4701 4971 5910 6268 6628 7835 8285 9402 9942 11820 15670 16570 18804 19884 23505 24855 31340 33140 47010 49710 94020 99420 308699 326429 617398 652858 926097 979287 1234796 1305716 1543495 1632145 1852194 1958574 2596519 3086990 3264290 3704388 3917148 4630485 4896435 5193038 6173980 6528580 7789557 9260970 9792870 10386076 12982595 15579114 18521940 19585740 25965190 31158228 38947785 51930380 77895570 155791140 511514243 1023028486 1534542729 2046056972 2557571215 3069085458 5115142430 6138170916 7672713645 10230284860 15345427290 30690854580