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390355082 = 21352128817
BaseRepresentation
bin10111010001000…
…101100010001010
31000012112002111122
4113101011202022
51244412330312
6102422355242
712446651315
oct2721054212
91005462448
10390355082
11190388607
12aa88bb22
1362b45550
1439bb397c
152440ab72
hex1744588a

390355082 has 16 divisors (see below), whose sum is σ = 631805832. Its totient is φ = 179811840.

The previous prime is 390355081. The next prime is 390355093. The reversal of 390355082 is 280553093.

It can be written as a sum of positive squares in 4 ways, for example, as 331203601 + 59151481 = 18199^2 + 7691^2 .

It is a zygodrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (390355081) 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, 863 + ... + 27954.

Almost surely, 2390355082 is an apocalyptic number.

390355082 is a deficient number, since it is larger than the sum of its proper divisors (241450750).

390355082 is a wasteful number, since it uses less digits than its factorization.

390355082 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29353.

The product of its (nonzero) digits is 32400, while the sum is 35.

The square root of 390355082 is about 19757.4057507558. The cubic root of 390355082 is about 730.8360234862.

It can be divided in two parts, 3903 and 55082, that added together give a palindrome (58985).

The spelling of 390355082 in words is "three hundred ninety million, three hundred fifty-five thousand, eighty-two".

Divisors: 1 2 13 26 521 1042 6773 13546 28817 57634 374621 749242 15013657 30027314 195177541 390355082