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387380 = 22572767
BaseRepresentation
bin1011110100100110100
3201200101102
41132210310
544344010
612145232
73202250
oct1364464
9650342
10387380
11245054
12168218
13107426
14a1260
1579ba5
hex5e934

387380 has 24 divisors (see below), whose sum is σ = 930048. Its totient is φ = 132768.

The previous prime is 387371. The next prime is 387397. The reversal of 387380 is 83783.

It is a congruent number.

It is an unprimeable number.

387380 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1244 + ... + 1523.

It is an arithmetic number, because the mean of its divisors is an integer number (38752).

2387380 is an apocalyptic number.

It is an amenable number.

387380 is an abundant number, since it is smaller than the sum of its proper divisors (542668).

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

387380 is a wasteful number, since it uses less digits than its factorization.

387380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2783 (or 2781 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 387380 is about 622.3985861166. The cubic root of 387380 is about 72.8974603383.

It can be divided in two parts, 387 and 380, that added together give a palindrome (767).

The spelling of 387380 in words is "three hundred eighty-seven thousand, three hundred eighty".

Divisors: 1 2 4 5 7 10 14 20 28 35 70 140 2767 5534 11068 13835 19369 27670 38738 55340 77476 96845 193690 387380