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232166141 = 298005729
BaseRepresentation
bin11011101011010…
…01001011111101
3121011212021001222
431311221023331
5433413304031
635012043125
75516244134
oct1565511375
9534767058
10232166141
1110a062949
12659034a5
133913a21c
1422b9691b
15155aee7b
hexdd692fd

232166141 has 4 divisors (see below), whose sum is σ = 240171900. Its totient is φ = 224160384.

The previous prime is 232166119. The next prime is 232166147. The reversal of 232166141 is 141661232.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 157602916 + 74563225 = 12554^2 + 8635^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-232166141 is a prime.

It is a super-2 number, since 2×2321661412 = 107802234053663762, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 232166141.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (232166147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4002836 + ... + 4002893.

It is an arithmetic number, because the mean of its divisors is an integer number (60042975).

Almost surely, 2232166141 is an apocalyptic number.

It is an amenable number.

232166141 is a deficient number, since it is larger than the sum of its proper divisors (8005759).

232166141 is an equidigital number, since it uses as much as digits as its factorization.

232166141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8005758.

The product of its digits is 1728, while the sum is 26.

The square root of 232166141 is about 15236.9990811839. Note that the first 3 decimals coincide. The cubic root of 232166141 is about 614.6100076637.

The spelling of 232166141 in words is "two hundred thirty-two million, one hundred sixty-six thousand, one hundred forty-one".

Divisors: 1 29 8005729 232166141