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1230930 = 23354797
BaseRepresentation
bin100101100100001010010
32022112112000
410230201102
5303342210
642214430
713314501
oct4544122
92275460
101230930
117708a8
124b4416
1334137c
14240838
15194ac0
hex12c852

1230930 has 64 divisors (see below), whose sum is σ = 3386880. Its totient is φ = 317952.

The previous prime is 1230913. The next prime is 1230941. The reversal of 1230930 is 390321.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an Ulam number.

1230930 is a Rhonda number in base 8.

It is a Curzon 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, 12642 + ... + 12738.

It is an arithmetic number, because the mean of its divisors is an integer number (52920).

21230930 is an apocalyptic number.

1230930 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 1230930, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1693440).

1230930 is an abundant number, since it is smaller than the sum of its proper divisors (2155950).

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

1230930 is a wasteful number, since it uses less digits than its factorization.

1230930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160 (or 154 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

The square root of 1230930 is about 1109.4728477975. The cubic root of 1230930 is about 107.1711239705.

The spelling of 1230930 in words is "one million, two hundred thirty thousand, nine hundred thirty".

Divisors: 1 2 3 5 6 9 10 15 18 27 30 45 47 54 90 94 97 135 141 194 235 270 282 291 423 470 485 582 705 846 873 970 1269 1410 1455 1746 2115 2538 2619 2910 4230 4365 4559 5238 6345 8730 9118 12690 13095 13677 22795 26190 27354 41031 45590 68385 82062 123093 136770 205155 246186 410310 615465 1230930