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244454380 = 22519643301
BaseRepresentation
bin11101001001000…
…01001111101100
3122000222120100221
432210201033230
51000040020010
640131301124
76025553662
oct1644411754
9560876327
10244454380
11115a96215
1269a4a7a4
133b850481
1424674c32
15166dadda
hexe9213ec

244454380 has 24 divisors (see below), whose sum is σ = 540373680. Its totient is φ = 92635200.

The previous prime is 244454359. The next prime is 244454381. The reversal of 244454380 is 83454442.

244454380 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (244454381) 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, 321271 + ... + 322030.

It is an arithmetic number, because the mean of its divisors is an integer number (22515570).

Almost surely, 2244454380 is an apocalyptic number.

244454380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

244454380 is an abundant number, since it is smaller than the sum of its proper divisors (295919300).

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

244454380 is a wasteful number, since it uses less digits than its factorization.

244454380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 643329 (or 643327 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 34.

The square root of 244454380 is about 15635.0369363171. The cubic root of 244454380 is about 625.2676229883.

The spelling of 244454380 in words is "two hundred forty-four million, four hundred fifty-four thousand, three hundred eighty".

Divisors: 1 2 4 5 10 19 20 38 76 95 190 380 643301 1286602 2573204 3216505 6433010 12222719 12866020 24445438 48890876 61113595 122227190 244454380