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380038664 = 23793491723
BaseRepresentation
bin10110101001101…
…110111000001000
3222111002222001002
4112221232320020
51234242214124
6101413314132
712263163305
oct2651567010
9874088032
10380038664
11185581745
12a7335948
1360972965
143868a0ac
152356e0ae
hex16a6ee08

380038664 has 32 divisors (see below), whose sum is σ = 724080000. Its totient is φ = 186967872.

The previous prime is 380038651. The next prime is 380038667. The reversal of 380038664 is 466830083.

It is a super-2 number, since 2×3800386642 = 288858772269809792, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (380038667) 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, 219707 + ... + 221429.

It is an arithmetic number, because the mean of its divisors is an integer number (22627500).

Almost surely, 2380038664 is an apocalyptic number.

It is an amenable number.

380038664 is a deficient number, since it is larger than the sum of its proper divisors (344041336).

380038664 is a wasteful number, since it uses less digits than its factorization.

380038664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2157 (or 2153 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 38.

The square root of 380038664 is about 19494.5803750683. The cubic root of 380038664 is about 724.3402092480.

The spelling of 380038664 in words is "three hundred eighty million, thirty-eight thousand, six hundred sixty-four".

Divisors: 1 2 4 8 79 158 316 349 632 698 1396 1723 2792 3446 6892 13784 27571 55142 110284 136117 220568 272234 544468 601327 1088936 1202654 2405308 4810616 47504833 95009666 190019332 380038664