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102888253 = 137914481
BaseRepresentation
bin1100010000111…
…11001100111101
321011121021011001
412020133030331
5202314411003
614113130301
72356351516
oct610371475
9234537131
10102888253
1153094516
122a559991
1318415330
14d943a0d
15907561d
hex621f33d

102888253 has 4 divisors (see below), whose sum is σ = 110802748. Its totient is φ = 94973760.

The previous prime is 102888239. The next prime is 102888263. The reversal of 102888253 is 352888201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 49042009 + 53846244 = 7003^2 + 7338^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-102888253 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 (102888263) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3957228 + ... + 3957253.

It is an arithmetic number, because the mean of its divisors is an integer number (27700687).

Almost surely, 2102888253 is an apocalyptic number.

102888253 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

102888253 is a deficient number, since it is larger than the sum of its proper divisors (7914495).

102888253 is an equidigital number, since it uses as much as digits as its factorization.

102888253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7914494.

The product of its (nonzero) digits is 30720, while the sum is 37.

The square root of 102888253 is about 10143.3846915120. The cubic root of 102888253 is about 468.5852325674.

The spelling of 102888253 in words is "one hundred two million, eight hundred eighty-eight thousand, two hundred fifty-three".

Divisors: 1 13 7914481 102888253