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102380811 = 3132625149
BaseRepresentation
bin1100001101000…
…11010100001011
321010122111001220
412012203110023
5202202141221
614054213123
72352136221
oct606432413
9233574056
10102380811
1152878245
122a3541a3
1318298380
14d850b11
158ec50c6
hex61a350b

102380811 has 8 divisors (see below), whose sum is σ = 147008400. Its totient is φ = 63003552.

The previous prime is 102380809. The next prime is 102380849. The reversal of 102380811 is 118083201.

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

It is not a de Polignac number, because 102380811 - 21 = 102380809 is a prime.

It is a super-2 number, since 2×1023808112 = 20963660922035442, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (102380801) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1312536 + ... + 1312613.

It is an arithmetic number, because the mean of its divisors is an integer number (18376050).

Almost surely, 2102380811 is an apocalyptic number.

102380811 is a deficient number, since it is larger than the sum of its proper divisors (44627589).

102380811 is a wasteful number, since it uses less digits than its factorization.

102380811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2625165.

The product of its (nonzero) digits is 384, while the sum is 24.

The square root of 102380811 is about 10118.3403283345. The cubic root of 102380811 is about 467.8136128633.

The spelling of 102380811 in words is "one hundred two million, three hundred eighty thousand, eight hundred eleven".

Divisors: 1 3 13 39 2625149 7875447 34126937 102380811