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1072445 = 511173137
BaseRepresentation
bin100000101110100111101
32000111010012
410011310331
5233304240
634553005
712054443
oct4056475
92014105
101072445
11672820
12438765
132b71aa
141dcb93
15162b65
hex105d3d

1072445 has 32 divisors (see below), whose sum is σ = 1575936. Its totient is φ = 691200.

The previous prime is 1072439. The next prime is 1072447. The reversal of 1072445 is 5442701.

It can be divided in two parts, 107 and 2445, that added together give a palindrome (2552).

1072445 = T1 + T2 + ... + T185.

1072445 is a nontrivial binomial coefficient, being equal to C(187, 3).

It is not a de Polignac number, because 1072445 - 24 = 1072429 is a prime.

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 1072445.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1072447) by changing a digit.

It is the 185-th tetrahedral number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28967 + ... + 29003.

It is an arithmetic number, because the mean of its divisors is an integer number (49248).

21072445 is an apocalyptic number.

It is an amenable number.

1072445 is a deficient number, since it is larger than the sum of its proper divisors (503491).

1072445 is a wasteful number, since it uses less digits than its factorization.

1072445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101.

The product of its (nonzero) digits is 1120, while the sum is 23.

The square root of 1072445 is about 1035.5892042697. The cubic root of 1072445 is about 102.3587584675.

The spelling of 1072445 in words is "one million, seventy-two thousand, four hundred forty-five".

Divisors: 1 5 11 17 31 37 55 85 155 185 187 341 407 527 629 935 1147 1705 2035 2635 3145 5735 5797 6919 12617 19499 28985 34595 63085 97495 214489 1072445