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7939044 = 2232220529
BaseRepresentation
bin11110010010001111100100
3112221100022200
4132102033210
54013022134
6442054500
7124323621
oct36221744
915840280
107939044
1145327a3
1227aa430
13184c779
1410a9348
15a6c499
hex7923e4

7939044 has 18 divisors (see below), whose sum is σ = 20068230. Its totient is φ = 2646336.

The previous prime is 7939039. The next prime is 7939049. The reversal of 7939044 is 4409397.

7939044 is digitally balanced in base 4 and base 5, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (7939039) and next prime (7939049).

It can be written as a sum of positive squares in only one way, i.e., 5116644 + 2822400 = 2262^2 + 1680^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 220529 = 7939044 / (7 + 9 + 3 + 9 + 0 + 4 + 4).

It is a zygodrome in base 3.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7939049) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 110229 + ... + 110300.

Almost surely, 27939044 is an apocalyptic number.

It is an amenable number.

7939044 is an abundant number, since it is smaller than the sum of its proper divisors (12129186).

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

7939044 is a wasteful number, since it uses less digits than its factorization.

7939044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220539 (or 220534 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 7939044 is about 2817.6309197622. The cubic root of 7939044 is about 199.4907376935.

The spelling of 7939044 in words is "seven million, nine hundred thirty-nine thousand, forty-four".

Divisors: 1 2 3 4 6 9 12 18 36 220529 441058 661587 882116 1323174 1984761 2646348 3969522 7939044