Search a number
-
+
145460 = 22571039
BaseRepresentation
bin100011100000110100
321101112102
4203200310
514123320
63041232
71144040
oct434064
9241472
10145460
119a317
1270218
1351293
143b020
152d175
hex23834

145460 has 24 divisors (see below), whose sum is σ = 349440. Its totient is φ = 49824.

The previous prime is 145459. The next prime is 145463. The reversal of 145460 is 64541.

It is a happy number.

It is a super-2 number, since 2×1454602 = 42317223200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 380 + ... + 659.

It is an arithmetic number, because the mean of its divisors is an integer number (14560).

2145460 is an apocalyptic number.

145460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145460 is an abundant number, since it is smaller than the sum of its proper divisors (203980).

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

145460 is a wasteful number, since it uses less digits than its factorization.

145460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1055 (or 1053 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 145460 is about 381.3921866006. The cubic root of 145460 is about 52.5913752623.

The spelling of 145460 in words is "one hundred forty-five thousand, four hundred sixty".

Divisors: 1 2 4 5 7 10 14 20 28 35 70 140 1039 2078 4156 5195 7273 10390 14546 20780 29092 36365 72730 145460