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245444168 = 232921912
BaseRepresentation
bin11101010000100…
…10111001001000
3122002211212002202
432220102321020
51000313203133
640204415332
76040145444
oct1650227110
9562755082
10245444168
11116601922
126a247548
133bb08b48
1424851824
15168342e8
hexea12e48

245444168 has 36 divisors (see below), whose sum is σ = 479132745. Its totient is φ = 117869920.

The previous prime is 245444167. The next prime is 245444179. The reversal of 245444168 is 861444542.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 245298244 + 145924 = 15662^2 + 382^2 .

It is an ABA number since it can be written as A⋅BA, here for A=2, B=11078.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (245444161) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1284953 + ... + 1285143.

Almost surely, 2245444168 is an apocalyptic number.

It is an amenable number.

245444168 is a deficient number, since it is larger than the sum of its proper divisors (233688577).

245444168 is an equidigital number, since it uses as much as digits as its factorization.

245444168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446 (or 222 counting only the distinct ones).

The product of its digits is 122880, while the sum is 38.

The square root of 245444168 is about 15666.6578439691. The cubic root of 245444168 is about 626.1103828051.

The spelling of 245444168 in words is "two hundred forty-five million, four hundred forty-four thousand, one hundred sixty-eight".

Divisors: 1 2 4 8 29 58 116 191 232 382 764 841 1528 1682 3364 5539 6728 11078 22156 36481 44312 72962 145924 160631 291848 321262 642524 1057949 1285048 2115898 4231796 8463592 30680521 61361042 122722084 245444168