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1087040 = 2654379
BaseRepresentation
bin100001001011001000000
32001020010202
410021121000
5234241130
635144332
712145133
oct4113100
92036122
101087040
11682789
124450a8
132c0a26
1420421a
15167145
hex109640

1087040 has 56 divisors (see below), whose sum is σ = 2682240. Its totient is φ = 419328.

The previous prime is 1087027. The next prime is 1087061. The reversal of 1087040 is 407801.

It is a happy number.

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

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13721 + ... + 13799.

21087040 is an apocalyptic number.

1087040 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 1087040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1341120).

1087040 is an abundant number, since it is smaller than the sum of its proper divisors (1595200).

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

1087040 is an equidigital number, since it uses as much as digits as its factorization.

1087040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139 (or 129 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 20.

The square root of 1087040 is about 1042.6121042842. The cubic root of 1087040 is about 102.8210043531.

The spelling of 1087040 in words is "one million, eighty-seven thousand, forty".

Divisors: 1 2 4 5 8 10 16 20 32 40 43 64 79 80 86 158 160 172 215 316 320 344 395 430 632 688 790 860 1264 1376 1580 1720 2528 2752 3160 3397 3440 5056 6320 6794 6880 12640 13588 13760 16985 25280 27176 33970 54352 67940 108704 135880 217408 271760 543520 1087040