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102115254 = 2317019209
BaseRepresentation
bin1100001011000…
…10011110110110
321010010222210110
412011202132312
5202120142004
614044403450
72346652053
oct605423666
9233128713
10102115254
115270677a
122a246586
1318204537
14d7c202a
158e71589
hex61627b6

102115254 has 8 divisors (see below), whose sum is σ = 204230520. Its totient is φ = 34038416.

The previous prime is 102115217. The next prime is 102115267. The reversal of 102115254 is 452511201.

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

102115254 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 102115254.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8509599 + ... + 8509610.

It is an arithmetic number, because the mean of its divisors is an integer number (25528815).

Almost surely, 2102115254 is an apocalyptic number.

102115254 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

102115254 is a wasteful number, since it uses less digits than its factorization.

102115254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17019214.

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 102115254 is about 10105.2092506786. The cubic root of 102115254 is about 467.4087884814.

Adding to 102115254 its reverse (452511201), we get a palindrome (554626455).

The spelling of 102115254 in words is "one hundred two million, one hundred fifteen thousand, two hundred fifty-four".

Divisors: 1 2 3 6 17019209 34038418 51057627 102115254