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1444031144 = 23180503893
BaseRepresentation
bin101011000010010…
…0010101010101000
310201122012101022222
41112010202222220
510424132444034
6355142333212
750533030223
oct12604425250
93648171288
101444031144
11681132a76
1234372a208
131a02270ca
14d9ad45ba
1586b9112e
hex56122aa8

1444031144 has 8 divisors (see below), whose sum is σ = 2707558410. Its totient is φ = 722015568.

The previous prime is 1444031129. The next prime is 1444031161. The reversal of 1444031144 is 4411304441.

It can be written as a sum of positive squares in only one way, i.e., 1425968644 + 18062500 = 37762^2 + 4250^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-3 number, since 3×14440311443 (a number of 28 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90251939 + ... + 90251954.

Almost surely, 21444031144 is an apocalyptic number.

It is an amenable number.

1444031144 is a deficient number, since it is larger than the sum of its proper divisors (1263527266).

1444031144 is a wasteful number, since it uses less digits than its factorization.

1444031144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180503899 (or 180503895 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 26.

The square root of 1444031144 is about 38000.4097872641. The cubic root of 1444031144 is about 1130.2959894998.

Adding to 1444031144 its reverse (4411304441), we get a palindrome (5855335585).

The spelling of 1444031144 in words is "one billion, four hundred forty-four million, thirty-one thousand, one hundred forty-four".

Divisors: 1 2 4 8 180503893 361007786 722015572 1444031144