Search a number
-
+
268878125 = 55139619
BaseRepresentation
bin10000000001101…
…100000100101101
3200201221102110002
4100001230010231
51022313100000
642402554045
76443266145
oct2001540455
9621842402
10268878125
1112885812a
1276068925
13439222a9
14279d1925
15189128d5
hex1006c12d

268878125 has 24 divisors (see below), whose sum is σ = 339040800. Its totient is φ = 213210000.

The previous prime is 268878109. The next prime is 268878133. The reversal of 268878125 is 521878862.

It is not a de Polignac number, because 268878125 - 24 = 268878109 is a prime.

It is a super-2 number, since 2×2688781252 = 144590892207031250, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 268878125.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 434066 + ... + 434684.

It is an arithmetic number, because the mean of its divisors is an integer number (14126700).

Almost surely, 2268878125 is an apocalyptic number.

268878125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

268878125 is a deficient number, since it is larger than the sum of its proper divisors (70162675).

268878125 is an frugal number, since it uses more digits than its factorization.

268878125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 783 (or 763 counting only the distinct ones).

The product of its digits is 430080, while the sum is 47.

The square root of 268878125 is about 16397.5036209784. The cubic root of 268878125 is about 645.4339767150.

The spelling of 268878125 in words is "two hundred sixty-eight million, eight hundred seventy-eight thousand, one hundred twenty-five".

Divisors: 1 5 25 125 139 619 625 695 3095 3125 3475 15475 17375 77375 86041 86875 386875 430205 434375 1934375 2151025 10755125 53775625 268878125