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BaseRepresentation
bin10111101101110…
…010101110010000
31000201200102001000
4113231302232100
51303324131313
6103251542000
712600632415
oct2755625620
91021612030
10397880208
11194658320
12b12ba900
136457b79b
143abb210c
1524de5673
hex17b72b90

397880208 has 160 divisors (see below), whose sum is σ = 1259740800. Its totient is φ = 119232000.

The previous prime is 397880183. The next prime is 397880209. The reversal of 397880208 is 802088793.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397880209) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 479538 + ... + 480366.

It is an arithmetic number, because the mean of its divisors is an integer number (7873380).

Almost surely, 2397880208 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 397880208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (629870400).

397880208 is an abundant number, since it is smaller than the sum of its proper divisors (861860592).

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

397880208 is a wasteful number, since it uses less digits than its factorization.

397880208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 958 (or 946 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

The square root of 397880208 is about 19946.9348021193. The cubic root of 397880208 is about 735.5024303153.

The spelling of 397880208 in words is "three hundred ninety-seven million, eight hundred eighty thousand, two hundred eight".