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1405230 = 235311511
BaseRepresentation
bin101010111000100101110
32122101121120
411113010232
5324431410
650041410
714641611
oct5270456
92571546
101405230
1187a852
12579266
133a27c8
14288178
151cb570
hex15712e

1405230 has 32 divisors (see below), whose sum is σ = 3483648. Its totient is φ = 362400.

The previous prime is 1405211. The next prime is 1405241. The reversal of 1405230 is 325041.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 175 + ... + 1685.

It is an arithmetic number, because the mean of its divisors is an integer number (108864).

21405230 is an apocalyptic number.

1405230 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 1405230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1741824).

1405230 is an abundant number, since it is smaller than the sum of its proper divisors (2078418).

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

1405230 is a wasteful number, since it uses less digits than its factorization.

1405230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1552.

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 1405230 is about 1185.4239747871. The cubic root of 1405230 is about 112.0080245101.

The spelling of 1405230 in words is "one million, four hundred five thousand, two hundred thirty".

Divisors: 1 2 3 5 6 10 15 30 31 62 93 155 186 310 465 930 1511 3022 4533 7555 9066 15110 22665 45330 46841 93682 140523 234205 281046 468410 702615 1405230