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1408290 = 2351323157
BaseRepresentation
bin101010111110100100010
32122112210220
411113310202
5330031130
650103510
714653542
oct5276442
92575726
101408290
11882084
1257ab96
133a4010
14289322
151cc410
hex157d22

1408290 has 64 divisors (see below), whose sum is σ = 3822336. Its totient is φ = 329472.

The previous prime is 1408289. The next prime is 1408301. The reversal of 1408290 is 928041.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1408290.

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 31 ways as a sum of consecutive naturals, for example, 8892 + ... + 9048.

It is an arithmetic number, because the mean of its divisors is an integer number (59724).

21408290 is an apocalyptic number.

1408290 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 1408290, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1911168).

1408290 is an abundant number, since it is smaller than the sum of its proper divisors (2414046).

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

1408290 is a wasteful number, since it uses less digits than its factorization.

1408290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203.

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 1408290 is about 1186.7139503688. The cubic root of 1408290 is about 112.0892676923.

Subtracting from 1408290 its reverse (928041), we obtain a square (480249 = 6932).

The spelling of 1408290 in words is "one million, four hundred eight thousand, two hundred ninety".

Divisors: 1 2 3 5 6 10 13 15 23 26 30 39 46 65 69 78 115 130 138 157 195 230 299 314 345 390 471 598 690 785 897 942 1495 1570 1794 2041 2355 2990 3611 4082 4485 4710 6123 7222 8970 10205 10833 12246 18055 20410 21666 30615 36110 46943 54165 61230 93886 108330 140829 234715 281658 469430 704145 1408290