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281372 = 22713773
BaseRepresentation
bin1000100101100011100
3112021222012
41010230130
533000442
610010352
72251220
oct1045434
9467865
10281372
11182443
121169b8
139b0c0
1474780
1558582
hex44b1c

281372 has 24 divisors (see below), whose sum is σ = 606816. Its totient is φ = 111168.

The previous prime is 281363. The next prime is 281381. The reversal of 281372 is 273182.

It is an interprime number because it is at equal distance from previous prime (281363) and next prime (281381).

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 281372.

It is an unprimeable number.

281372 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23 + ... + 750.

It is an arithmetic number, because the mean of its divisors is an integer number (25284).

2281372 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 281372, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (303408).

281372 is an abundant number, since it is smaller than the sum of its proper divisors (325444).

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

281372 is a wasteful number, since it uses less digits than its factorization.

281372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 797 (or 795 counting only the distinct ones).

The product of its digits is 672, while the sum is 23.

The square root of 281372 is about 530.4450961221. The cubic root of 281372 is about 65.5280069806.

It can be divided in two parts, 28 and 1372, that multiplied together give a 4-th power (38416 = 144).

The spelling of 281372 in words is "two hundred eighty-one thousand, three hundred seventy-two".

Divisors: 1 2 4 7 13 14 26 28 52 91 182 364 773 1546 3092 5411 10049 10822 20098 21644 40196 70343 140686 281372