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390808482 = 23157414871
BaseRepresentation
bin10111010010110…
…100001110100010
31000020101010110020
4113102310032202
51300021332412
6102440214310
712453550221
oct2722641642
91006333406
10390808482
11190668219
12aaa6a396
1362c73a2c
1439c90cb8
152449a18c
hex174b43a2

390808482 has 16 divisors (see below), whose sum is σ = 786597312. Its totient is φ = 129439440.

The previous prime is 390808469. The next prime is 390808489. The reversal of 390808482 is 284808093.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (390808489) 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, 206494 + ... + 208377.

It is an arithmetic number, because the mean of its divisors is an integer number (49162332).

Almost surely, 2390808482 is an apocalyptic number.

390808482 is an abundant number, since it is smaller than the sum of its proper divisors (395788830).

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

390808482 is a wasteful number, since it uses less digits than its factorization.

390808482 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415033.

The product of its (nonzero) digits is 110592, while the sum is 42.

The square root of 390808482 is about 19768.8765993417. The cubic root of 390808482 is about 731.1188709571.

The spelling of 390808482 in words is "three hundred ninety million, eight hundred eight thousand, four hundred eighty-two".

Divisors: 1 2 3 6 157 314 471 942 414871 829742 1244613 2489226 65134747 130269494 195404241 390808482