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1801074 = 231129941
BaseRepresentation
bin110110111101101110010
310101111121110
412313231302
5430113244
6102334150
721210642
oct6675562
93344543
101801074
1110201a0
1272a356
134b0a32
1434c522
152589b9
hex1b7b72

1801074 has 32 divisors (see below), whose sum is σ = 4069440. Its totient is φ = 526400.

The previous prime is 1801073. The next prime is 1801091. The reversal of 1801074 is 4701081.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1801074.

It is not an unprimeable number, because it can be changed into a prime (1801073) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1444 + ... + 2384.

It is an arithmetic number, because the mean of its divisors is an integer number (127170).

21801074 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1801074, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2034720).

1801074 is an abundant number, since it is smaller than the sum of its proper divisors (2268366).

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

1801074 is a wasteful number, since it uses less digits than its factorization.

1801074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 986.

The product of its (nonzero) digits is 224, while the sum is 21.

The square root of 1801074 is about 1342.0409829808. The cubic root of 1801074 is about 121.6682287492.

The spelling of 1801074 in words is "one million, eight hundred one thousand, seventy-four".

Divisors: 1 2 3 6 11 22 29 33 58 66 87 174 319 638 941 957 1882 1914 2823 5646 10351 20702 27289 31053 54578 62106 81867 163734 300179 600358 900537 1801074