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387941442 = 23743214807
BaseRepresentation
bin10111000111111…
…000010001000010
31000000222110121120
4113013320101002
51243303111232
6102254533110
712420306420
oct2707702102
91000873546
10387941442
11189a8a169
12a9b07196
13624aba65
1439746110
15240d092c
hex171f8442

387941442 has 32 divisors (see below), whose sum is σ = 907348992. Its totient is φ = 108262224.

The previous prime is 387941441. The next prime is 387941443. The reversal of 387941442 is 244149783.

It is an interprime number because it is at equal distance from previous prime (387941441) and next prime (387941443).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 387941394 and 387941403.

It is not an unprimeable number, because it can be changed into a prime (387941441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 105598 + ... + 109209.

It is an arithmetic number, because the mean of its divisors is an integer number (28354656).

Almost surely, 2387941442 is an apocalyptic number.

387941442 is an abundant number, since it is smaller than the sum of its proper divisors (519407550).

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

387941442 is a wasteful number, since it uses less digits than its factorization.

387941442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214862.

The product of its digits is 193536, while the sum is 42.

The square root of 387941442 is about 19696.2291314861. The cubic root of 387941442 is about 729.3266086426.

The spelling of 387941442 in words is "three hundred eighty-seven million, nine hundred forty-one thousand, four hundred forty-two".

Divisors: 1 2 3 6 7 14 21 42 43 86 129 258 301 602 903 1806 214807 429614 644421 1288842 1503649 3007298 4510947 9021894 9236701 18473402 27710103 55420206 64656907 129313814 193970721 387941442