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232228081 = 4737913037
BaseRepresentation
bin11011101011110…
…00010011110001
3121011222102001001
431311320103301
5433422244311
635013242001
75516622541
oct1565702361
9534872031
10232228081
1110a0a5438
1265933301
133915c487
1422bb1321
15155c34c1
hexdd784f1

232228081 has 8 divisors (see below), whose sum is σ = 237813120. Its totient is φ = 226669968.

The previous prime is 232228069. The next prime is 232228091. The reversal of 232228081 is 180822232.

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

It is a cyclic number.

It is not a de Polignac number, because 232228081 - 219 = 231703793 is a prime.

It is a super-2 number, since 2×2322280812 = 107859763209885122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (232228091) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11295 + ... + 24331.

It is an arithmetic number, because the mean of its divisors is an integer number (29726640).

Almost surely, 2232228081 is an apocalyptic number.

It is an amenable number.

232228081 is a deficient number, since it is larger than the sum of its proper divisors (5585039).

232228081 is a wasteful number, since it uses less digits than its factorization.

232228081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13463.

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 232228081 is about 15239.0314980972. The cubic root of 232228081 is about 614.6646604205.

It can be divided in two parts, 2322 and 28081, that added together give a palindrome (30403).

The spelling of 232228081 in words is "two hundred thirty-two million, two hundred twenty-eight thousand, eighty-one".

Divisors: 1 47 379 13037 17813 612739 4941023 232228081