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102897299 = 107961657
BaseRepresentation
bin1100010001000…
…01011010010011
321011121201120002
412020201122103
5202320203144
614113240215
72356420061
oct610413223
9234551502
10102897299
11530a029a
122a56306b
131841949b
14d947031
15907814e
hex6221693

102897299 has 4 divisors (see below), whose sum is σ = 103859064. Its totient is φ = 101935536.

The previous prime is 102897287. The next prime is 102897313. The reversal of 102897299 is 992798201.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 992798201 = 9710235033.

It is a cyclic number.

It is not a de Polignac number, because 102897299 - 24 = 102897283 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102897229) 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, 480722 + ... + 480935.

It is an arithmetic number, because the mean of its divisors is an integer number (25964766).

Almost surely, 2102897299 is an apocalyptic number.

102897299 is a deficient number, since it is larger than the sum of its proper divisors (961765).

102897299 is an equidigital number, since it uses as much as digits as its factorization.

102897299 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 961764.

The product of its (nonzero) digits is 163296, while the sum is 47.

The square root of 102897299 is about 10143.8305880964. The cubic root of 102897299 is about 468.5989649346.

The spelling of 102897299 in words is "one hundred two million, eight hundred ninety-seven thousand, two hundred ninety-nine".

Divisors: 1 107 961657 102897299