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1344981 = 31153769
BaseRepresentation
bin101001000010111010101
32112022222010
411020113111
5321014411
644454433
714301141
oct5102725
92468863
101344981
11839560
1254a419
13381261
14270221
151b87a6
hex1485d5

1344981 has 16 divisors (see below), whose sum is σ = 1995840. Its totient is φ = 798720.

The previous prime is 1344979. The next prime is 1345009. The reversal of 1344981 is 1894431.

1344981 = 642 + 652 + ... + 1622.

It is a happy number.

It is not a de Polignac number, because 1344981 - 21 = 1344979 is a prime.

It is a super-2 number, since 2×13449812 = 3617947780722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1344901) 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, 1365 + ... + 2133.

It is an arithmetic number, because the mean of its divisors is an integer number (124740).

21344981 is an apocalyptic number.

1344981 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1344981 is a deficient number, since it is larger than the sum of its proper divisors (650859).

1344981 is a wasteful number, since it uses less digits than its factorization.

1344981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 836.

The product of its digits is 3456, while the sum is 30.

The square root of 1344981 is about 1159.7331589637. The cubic root of 1344981 is about 110.3838107693.

It can be divided in two parts, 13449 and 81, that added together give a triangular number (13530 = T164).

The spelling of 1344981 in words is "one million, three hundred forty-four thousand, nine hundred eighty-one".

Divisors: 1 3 11 33 53 159 583 769 1749 2307 8459 25377 40757 122271 448327 1344981