Search a number
-
+
102152808 = 23324730187
BaseRepresentation
bin1100001011010…
…11101001101000
321010012220022100
412011223221220
5202122342213
614045253400
72350166412
oct605535150
9233186270
10102152808
1152731a0a
122a264260
1318218664
14d7d19b2
158e7c773
hex616ba68

102152808 has 48 divisors (see below), whose sum is σ = 282559680. Its totient is φ = 33325344.

The previous prime is 102152803. The next prime is 102152833. The reversal of 102152808 is 808251201.

It is not an unprimeable number, because it can be changed into a prime (102152801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11710 + ... + 18477.

It is an arithmetic number, because the mean of its divisors is an integer number (5886660).

Almost surely, 2102152808 is an apocalyptic number.

102152808 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

102152808 is an abundant number, since it is smaller than the sum of its proper divisors (180406872).

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

102152808 is a wasteful number, since it uses less digits than its factorization.

102152808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30246 (or 30239 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 27.

The square root of 102152808 is about 10107.0672304086. The cubic root of 102152808 is about 467.4660796879.

The spelling of 102152808 in words is "one hundred two million, one hundred fifty-two thousand, eight hundred eight".

Divisors: 1 2 3 4 6 8 9 12 18 24 36 47 72 94 141 188 282 376 423 564 846 1128 1692 3384 30187 60374 90561 120748 181122 241496 271683 362244 543366 724488 1086732 1418789 2173464 2837578 4256367 5675156 8512734 11350312 12769101 17025468 25538202 34050936 51076404 102152808