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102630253 = 1144321061
BaseRepresentation
bin1100001111000…
…00001101101101
321011010011020111
412013200031231
5202233132003
614103420021
72354225365
oct607401555
9234104214
10102630253
1152a286a0
122a454611
1318354a7b
14d8b79a5
159023e6d
hex61e036d

102630253 has 8 divisors (see below), whose sum is σ = 112218336. Its totient is φ = 93085200.

The previous prime is 102630251. The next prime is 102630277. The reversal of 102630253 is 352036201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 102630253 - 21 = 102630251 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102630251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5658 + ... + 15403.

It is an arithmetic number, because the mean of its divisors is an integer number (14027292).

Almost surely, 2102630253 is an apocalyptic number.

It is an amenable number.

102630253 is a deficient number, since it is larger than the sum of its proper divisors (9588083).

102630253 is a wasteful number, since it uses less digits than its factorization.

102630253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21515.

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 102630253 is about 10130.6590604955. The cubic root of 102630253 is about 468.1932338745.

Adding to 102630253 its reverse (352036201), we get a palindrome (454666454).

The spelling of 102630253 in words is "one hundred two million, six hundred thirty thousand, two hundred fifty-three".

Divisors: 1 11 443 4873 21061 231671 9330023 102630253