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1206880 = 25519397
BaseRepresentation
bin100100110101001100000
32021022112021
410212221200
5302110010
641511224
713154413
oct4465140
92238467
101206880
11754824
124a2514
1333343c
14235b7a
1518c8da
hex126a60

1206880 has 48 divisors (see below), whose sum is σ = 3008880. Its totient is φ = 456192.

The previous prime is 1206869. The next prime is 1206941. The reversal of 1206880 is 886021.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2842 + ... + 3238.

It is an arithmetic number, because the mean of its divisors is an integer number (62685).

21206880 is an apocalyptic number.

1206880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1206880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1504440).

1206880 is an abundant number, since it is smaller than the sum of its proper divisors (1802000).

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

1206880 is a wasteful number, since it uses less digits than its factorization.

1206880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 431 (or 423 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 25.

The square root of 1206880 is about 1098.5809028014. The cubic root of 1206880 is about 106.4685558900.

The spelling of 1206880 in words is "one million, two hundred six thousand, eight hundred eighty".

Divisors: 1 2 4 5 8 10 16 19 20 32 38 40 76 80 95 152 160 190 304 380 397 608 760 794 1520 1588 1985 3040 3176 3970 6352 7543 7940 12704 15086 15880 30172 31760 37715 60344 63520 75430 120688 150860 241376 301720 603440 1206880