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388832046 = 2364805341
BaseRepresentation
bin10111001011010…
…001101100101110
31000002122201021220
4113023101230232
51244020111141
6102330004210
712431006061
oct2713215456
91002581256
10388832046
1118a5382a9
12aa276666
1362731245
14398d88d8
1524209766
hex172d1b2e

388832046 has 8 divisors (see below), whose sum is σ = 777664104. Its totient is φ = 129610680.

The previous prime is 388832023. The next prime is 388832047. The reversal of 388832046 is 640238883.

It is a sphenic number, since it is the product of 3 distinct primes.

388832046 is an admirable number.

It is a super-2 number, since 2×3888320462 = 302380719993092232, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 388831989 and 388832007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (388832047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32402665 + ... + 32402676.

It is an arithmetic number, because the mean of its divisors is an integer number (97208013).

Almost surely, 2388832046 is an apocalyptic number.

388832046 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

388832046 is a wasteful number, since it uses less digits than its factorization.

388832046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64805346.

The product of its (nonzero) digits is 221184, while the sum is 42.

The square root of 388832046 is about 19718.8246607144. The cubic root of 388832046 is about 729.8842914123.

The spelling of 388832046 in words is "three hundred eighty-eight million, eight hundred thirty-two thousand, forty-six".

Divisors: 1 2 3 6 64805341 129610682 194416023 388832046