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52163272 = 237931487
BaseRepresentation
bin1100011011111…
…1001011001000
310122011011120001
43012333023020
5101323211042
65102012344
71202244340
oct306771310
9118134501
1052163272
1127499047
12155770b4
13aa64c55
146cdbd20
1548a5bb7
hex31bf2c8

52163272 has 16 divisors (see below), whose sum is σ = 111778560. Its totient is φ = 22355664.

The previous prime is 52163269. The next prime is 52163281. The reversal of 52163272 is 27236125.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 52163272.

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, 465688 + ... + 465799.

It is an arithmetic number, because the mean of its divisors is an integer number (6986160).

Almost surely, 252163272 is an apocalyptic number.

It is an amenable number.

52163272 is an abundant number, since it is smaller than the sum of its proper divisors (59615288).

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

52163272 is a wasteful number, since it uses less digits than its factorization.

52163272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 931500 (or 931496 counting only the distinct ones).

The product of its digits is 5040, while the sum is 28.

The square root of 52163272 is about 7222.4145547040. The cubic root of 52163272 is about 373.6413578928.

Adding to 52163272 its reverse (27236125), we get a palindrome (79399397).

The spelling of 52163272 in words is "fifty-two million, one hundred sixty-three thousand, two hundred seventy-two".

Divisors: 1 2 4 7 8 14 28 56 931487 1862974 3725948 6520409 7451896 13040818 26081636 52163272