Search a number
-
+
52188388 = 2271863871
BaseRepresentation
bin1100011100010…
…1010011100100
310122012110000021
43013011103210
5101330012023
65102324524
71202410510
oct307052344
9118173007
1052188388
11275059aa
1215589744
13aa73505
146d07140
1548ad35d
hex31c54e4

52188388 has 12 divisors (see below), whose sum is σ = 104376832. Its totient is φ = 22366440.

The previous prime is 52188379. The next prime is 52188397. The reversal of 52188388 is 88388125.

It is an interprime number because it is at equal distance from previous prime (52188379) and next prime (52188397).

52188388 is an admirable number.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

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, 931908 + ... + 931963.

Almost surely, 252188388 is an apocalyptic number.

It is an amenable number.

52188388 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.

52188388 is a wasteful number, since it uses less digits than its factorization.

52188388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1863882 (or 1863880 counting only the distinct ones).

The product of its digits is 122880, while the sum is 43.

The square root of 52188388 is about 7224.1530991529. The cubic root of 52188388 is about 373.7013162391.

The spelling of 52188388 in words is "fifty-two million, one hundred eighty-eight thousand, three hundred eighty-eight".

Divisors: 1 2 4 7 14 28 1863871 3727742 7455484 13047097 26094194 52188388