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190123460 = 22547257787
BaseRepresentation
bin10110101010100…
…00110111000100
3111020202021100122
423111100313010
5342132422320
630511001112
74466010542
oct1325206704
9436667318
10190123460
119835762a
1253809198
13305099b7
141b370d92
1511a57d25
hexb550dc4

190123460 has 48 divisors (see below), whose sum is σ = 409860864. Its totient is φ = 74047488.

The previous prime is 190123459. The next prime is 190123469. The reversal of 190123460 is 64321091.

190123460 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×1901234602 = 72293860084743200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (190123469) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 241187 + ... + 241973.

It is an arithmetic number, because the mean of its divisors is an integer number (8538768).

Almost surely, 2190123460 is an apocalyptic number.

190123460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

190123460 is an abundant number, since it is smaller than the sum of its proper divisors (219737404).

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

190123460 is a wasteful number, since it uses less digits than its factorization.

190123460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1100 (or 1098 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 190123460 is about 13788.5263897198. The cubic root of 190123460 is about 575.0142000274.

The spelling of 190123460 in words is "one hundred ninety million, one hundred twenty-three thousand, four hundred sixty".

Divisors: 1 2 4 5 10 20 47 94 188 235 257 470 514 787 940 1028 1285 1574 2570 3148 3935 5140 7870 12079 15740 24158 36989 48316 60395 73978 120790 147956 184945 202259 241580 369890 404518 739780 809036 1011295 2022590 4045180 9506173 19012346 38024692 47530865 95061730 190123460