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1340244 = 223259631
BaseRepresentation
bin101000111001101010100
32112002110200
411013031110
5320341434
644420500
714251263
oct5071524
92462420
101340244
11835a44
12547730
1337c059
1426c5da
151b7199
hex147354

1340244 has 36 divisors (see below), whose sum is σ = 3450720. Its totient is φ = 438480.

The previous prime is 1340243. The next prime is 1340281. The reversal of 1340244 is 4420431.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340243) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1809 + ... + 2439.

21340244 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1340244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1725360).

1340244 is an abundant number, since it is smaller than the sum of its proper divisors (2110476).

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

1340244 is a wasteful number, since it uses less digits than its factorization.

1340244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 700 (or 695 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 1340244 is about 1157.6890774297. The cubic root of 1340244 is about 110.2540683707.

Adding to 1340244 its reverse (4420431), we get a palindrome (5760675).

The spelling of 1340244 in words is "one million, three hundred forty thousand, two hundred forty-four".

Divisors: 1 2 3 4 6 9 12 18 36 59 118 177 236 354 531 631 708 1062 1262 1893 2124 2524 3786 5679 7572 11358 22716 37229 74458 111687 148916 223374 335061 446748 670122 1340244