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102490 = 2537277
BaseRepresentation
bin11001000001011010
312012120221
4121001122
511234430
62110254
7604543
oct310132
9165527
10102490
1170003
124b38a
133785b
14294ca
152057a
hex1905a

102490 has 16 divisors (see below), whose sum is σ = 190152. Its totient is φ = 39744.

The previous prime is 102481. The next prime is 102497. The reversal of 102490 is 94201.

It can be written as a sum of positive squares in 4 ways, for example, as 85849 + 16641 = 293^2 + 129^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102497) 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, 232 + ... + 508.

2102490 is an apocalyptic number.

102490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102490 is a deficient number, since it is larger than the sum of its proper divisors (87662).

102490 is a wasteful number, since it uses less digits than its factorization.

102490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 102490 is about 320.1405941145. The cubic root of 102490 is about 46.7979861310.

Adding to 102490 its reverse (94201), we get a palindrome (196691).

It can be divided in two parts, 10 and 2490, that added together give a square (2500 = 502).

The spelling of 102490 in words is "one hundred two thousand, four hundred ninety".

Divisors: 1 2 5 10 37 74 185 277 370 554 1385 2770 10249 20498 51245 102490