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1880641 = 72311681
BaseRepresentation
bin111001011001001000001
310112112202101
413023021001
5440140031
6104150401
721661630
oct7131101
93475671
101880641
111074a54
12768401
1350b009
1436d517
15272361
hex1cb241

1880641 has 8 divisors (see below), whose sum is σ = 2242944. Its totient is φ = 1541760.

The previous prime is 1880633. The next prime is 1880647. The reversal of 1880641 is 1460881.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1880641 - 23 = 1880633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1880647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5680 + ... + 6001.

It is an arithmetic number, because the mean of its divisors is an integer number (280368).

21880641 is an apocalyptic number.

It is an amenable number.

1880641 is a deficient number, since it is larger than the sum of its proper divisors (362303).

1880641 is a wasteful number, since it uses less digits than its factorization.

1880641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11711.

The product of its (nonzero) digits is 1536, while the sum is 28.

The square root of 1880641 is about 1371.3646488079. The cubic root of 1880641 is about 123.4341412642.

The spelling of 1880641 in words is "one million, eight hundred eighty thousand, six hundred forty-one".

Divisors: 1 7 23 161 11681 81767 268663 1880641