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1088290 = 25722221
BaseRepresentation
bin100001001101100100010
32001021212001
410021230202
5234311130
635154214
712151600
oct4115442
92037761
101088290
11683715
1244596a
132c1478
14204870
151676ca
hex109b22

1088290 has 24 divisors (see below), whose sum is σ = 2279772. Its totient is φ = 372960.

The previous prime is 1088273. The next prime is 1088293. The reversal of 1088290 is 928801.

It can be written as a sum of positive squares in 2 ways, for example, as 1087849 + 441 = 1043^2 + 21^2 .

It is a Smith number, since the sum of its digits (28) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (1088293) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 621 + ... + 1600.

21088290 is an apocalyptic number.

1088290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1088290 is an abundant number, since it is smaller than the sum of its proper divisors (1191482).

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

1088290 is a wasteful number, since it uses less digits than its factorization.

1088290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2242 (or 2235 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 28.

The square root of 1088290 is about 1043.2113879747. The cubic root of 1088290 is about 102.8604009476.

It can be divided in two parts, 1088 and 290, that added together give a triangular number (1378 = T52).

The spelling of 1088290 in words is "one million, eighty-eight thousand, two hundred ninety".

Divisors: 1 2 5 7 10 14 35 49 70 98 245 490 2221 4442 11105 15547 22210 31094 77735 108829 155470 217658 544145 1088290