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102898969 = 555718517
BaseRepresentation
bin1100010001000…
…01110100011001
321011121210211221
412020201310121
5202320231334
614113252041
72356424665
oct610416431
9234553757
10102898969
11530a1578
122a564021
131841a184
14d9478a5
1590788b4
hex6221d19

102898969 has 4 divisors (see below), whose sum is σ = 102923044. Its totient is φ = 102874896.

The previous prime is 102898967. The next prime is 102898973. The reversal of 102898969 is 969898201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 969898201 = 2342169487.

It can be written as a sum of positive squares in 2 ways, for example, as 67436944 + 35462025 = 8212^2 + 5955^2 .

It is a cyclic number.

It is not a de Polignac number, because 102898969 - 21 = 102898967 is a prime.

It is a super-2 number, since 2×1028989692 = 21176395642525922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102898967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3702 + ... + 14815.

It is an arithmetic number, because the mean of its divisors is an integer number (25730761).

Almost surely, 2102898969 is an apocalyptic number.

It is an amenable number.

102898969 is a deficient number, since it is larger than the sum of its proper divisors (24075).

102898969 is an equidigital number, since it uses as much as digits as its factorization.

102898969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24074.

The product of its (nonzero) digits is 559872, while the sum is 52.

The square root of 102898969 is about 10143.9129038059. The cubic root of 102898969 is about 468.6015000061.

The spelling of 102898969 in words is "one hundred two million, eight hundred ninety-eight thousand, nine hundred sixty-nine".

Divisors: 1 5557 18517 102898969