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154855230 = 23531269619
BaseRepresentation
bin10010011101011…
…10011100111110
3101210101110102220
421032232130332
5304120331410
623211030210
73560150655
oct1116563476
9353343386
10154855230
117a459032
1243a3b366
132610bb1a
14167d019c
15d8dd070
hex93ae73e

154855230 has 64 divisors (see below), whose sum is σ = 385689600. Its totient is φ = 39749760.

The previous prime is 154855213. The next prime is 154855279. The reversal of 154855230 is 32558451.

It is a junction number, because it is equal to n+sod(n) for n = 154855191 and 154855200.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 249861 + ... + 250479.

It is an arithmetic number, because the mean of its divisors is an integer number (6026400).

Almost surely, 2154855230 is an apocalyptic number.

154855230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 154855230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (192844800).

154855230 is an abundant number, since it is smaller than the sum of its proper divisors (230834370).

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

154855230 is a wasteful number, since it uses less digits than its factorization.

154855230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 929.

The product of its (nonzero) digits is 24000, while the sum is 33.

The square root of 154855230 is about 12444.0841366490. The cubic root of 154855230 is about 537.0012449298.

The spelling of 154855230 in words is "one hundred fifty-four million, eight hundred fifty-five thousand, two hundred thirty".

Divisors: 1 2 3 5 6 10 15 30 31 62 93 155 186 269 310 465 538 619 807 930 1238 1345 1614 1857 2690 3095 3714 4035 6190 8070 8339 9285 16678 18570 19189 25017 38378 41695 50034 57567 83390 95945 115134 125085 166511 191890 250170 287835 333022 499533 575670 832555 999066 1665110 2497665 4995330 5161841 10323682 15485523 25809205 30971046 51618410 77427615 154855230