Search a number
-
+
1490280 = 2335111129
BaseRepresentation
bin101101011110101101000
32210201021120
411223311220
5340142110
651535240
715444561
oct5536550
92721246
101490280
11928740
125ba520
1340242c
142ab168
151e6870
hex16bd68

1490280 has 64 divisors (see below), whose sum is σ = 4881600. Its totient is φ = 360960.

The previous prime is 1490273. The next prime is 1490287. The reversal of 1490280 is 820941.

It is an interprime number because it is at equal distance from previous prime (1490273) and next prime (1490287).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 1490280.

It is not an unprimeable number, because it can be changed into a prime (1490287) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 756 + ... + 1884.

It is an arithmetic number, because the mean of its divisors is an integer number (76275).

21490280 is an apocalyptic number.

1490280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1490280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2440800).

1490280 is an abundant number, since it is smaller than the sum of its proper divisors (3391320).

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

1490280 is a wasteful number, since it uses less digits than its factorization.

1490280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1154 (or 1150 counting only the distinct ones).

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

The square root of 1490280 is about 1220.7702486545. The cubic root of 1490280 is about 114.2236299700.

It can be divided in two parts, 1490 and 280, that added together give a triangular number (1770 = T59).

The spelling of 1490280 in words is "one million, four hundred ninety thousand, two hundred eighty".

Divisors: 1 2 3 4 5 6 8 10 11 12 15 20 22 24 30 33 40 44 55 60 66 88 110 120 132 165 220 264 330 440 660 1129 1320 2258 3387 4516 5645 6774 9032 11290 12419 13548 16935 22580 24838 27096 33870 37257 45160 49676 62095 67740 74514 99352 124190 135480 149028 186285 248380 298056 372570 496760 745140 1490280