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102677690 = 25293421
BaseRepresentation
bin1100001111010…
…11110010111010
321011012120022102
412013223302322
5202241141230
614104423402
72354513603
oct607536272
9234176272
10102677690
1152a602a5
122a477b62
131837053b
14d8cadaa
159033045
hex61ebcba

102677690 has 32 divisors (see below), whose sum is σ = 191874960. Its totient is φ = 39560640.

The previous prime is 102677683. The next prime is 102677693. The reversal of 102677690 is 96776201.

It is a Cunningham number, because it is equal to 101332+1.

It can be written as a sum of positive squares in 8 ways, for example, as 1 + 102677689 = 1^2 + 10133^2 .

It is a super-2 number, since 2×1026776902 = 21085416047472200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (102677693) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 243680 + ... + 244100.

Almost surely, 2102677690 is an apocalyptic number.

102677690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102677690 is a deficient number, since it is larger than the sum of its proper divisors (89197270).

102677690 is an frugal number, since it uses more digits than its factorization.

102677690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 515 (or 457 counting only the distinct ones).

The product of its (nonzero) digits is 31752, while the sum is 38.

The square root of 102677690 is about 10133.0000493437. Note that the first 4 decimals coincide. The cubic root of 102677690 is about 468.2653577067.

The spelling of 102677690 in words is "one hundred two million, six hundred seventy-seven thousand, six hundred ninety".

Divisors: 1 2 5 10 29 58 145 290 421 841 842 1682 2105 4205 4210 8410 12209 24389 24418 48778 61045 121945 122090 243890 354061 708122 1770305 3540610 10267769 20535538 51338845 102677690