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380436620 = 225194912039
BaseRepresentation
bin10110101011010…
…000000010001100
3222111212011221012
4112223100002030
51234342432440
6101430024352
712266441444
oct2653200214
9874764835
10380436620
11185823733
12a74a80b8
1360a81b35
1438751124
15235ebe65
hex16ad008c

380436620 has 48 divisors (see below), whose sum is σ = 843091200. Its totient is φ = 143801280.

The previous prime is 380436607. The next prime is 380436631. The reversal of 380436620 is 26634083.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 185561 + ... + 187599.

It is an arithmetic number, because the mean of its divisors is an integer number (17564400).

Almost surely, 2380436620 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 380436620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (421545600).

380436620 is an abundant number, since it is smaller than the sum of its proper divisors (462654580).

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

380436620 is a wasteful number, since it uses less digits than its factorization.

380436620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2558 (or 2556 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 32.

The square root of 380436620 is about 19504.7845412350. The cubic root of 380436620 is about 724.5929510546.

The spelling of 380436620 in words is "three hundred eighty million, four hundred thirty-six thousand, six hundred twenty".

Divisors: 1 2 4 5 10 19 20 38 76 95 190 380 491 982 1964 2039 2455 4078 4910 8156 9329 9820 10195 18658 20390 37316 38741 40780 46645 77482 93290 154964 186580 193705 387410 774820 1001149 2002298 4004596 5005745 10011490 19021831 20022980 38043662 76087324 95109155 190218310 380436620