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380381355 = 32514956731
BaseRepresentation
bin10110101011000…
…010100010101011
3222111202101010100
4112223002202223
51234334200410
6101424520443
712266121354
oct2653024253
9874671110
10380381355
11185796162
12a7480123
1360a62933
1438738d2b
15235da8c0
hex16ac28ab

380381355 has 24 divisors (see below), whose sum is σ = 663764400. Its totient is φ = 201504960.

The previous prime is 380381321. The next prime is 380381359. The reversal of 380381355 is 553183083.

It is not a de Polignac number, because 380381355 - 27 = 380381227 is a prime.

It is not an unprimeable number, because it can be changed into a prime (380381359) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21661 + ... + 35070.

It is an arithmetic number, because the mean of its divisors is an integer number (27656850).

Almost surely, 2380381355 is an apocalyptic number.

380381355 is a deficient number, since it is larger than the sum of its proper divisors (283383045).

380381355 is a wasteful number, since it uses less digits than its factorization.

380381355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56891 (or 56888 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The square root of 380381355 is about 19503.3677861030. The cubic root of 380381355 is about 724.5578628020.

It can be divided in two parts, 38038 and 1355, that added together give a palindrome (39393).

The spelling of 380381355 in words is "three hundred eighty million, three hundred eighty-one thousand, three hundred fifty-five".

Divisors: 1 3 5 9 15 45 149 447 745 1341 2235 6705 56731 170193 283655 510579 850965 2552895 8452919 25358757 42264595 76076271 126793785 380381355