Search a number
-
+
388380112 = 2427778741
BaseRepresentation
bin10111001001100…
…011010111010000
31000001210202100121
4113021203113100
51243411130422
6102312200024
712424114351
oct2711432720
91001722317
10388380112
1118a2597aa
12aa099014
1362603623
143981bd28
152416a8c7
hex172635d0

388380112 has 20 divisors (see below), whose sum is σ = 752843556. Its totient is φ = 194097920.

The previous prime is 388380101. The next prime is 388380119. The reversal of 388380112 is 211083883.

It can be written as a sum of positive squares in 2 ways, for example, as 65674816 + 322705296 = 8104^2 + 17964^2 .

It is a super-2 number, since 2×3883801122 = 301678222794265088, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (388380119) 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, 40062 + ... + 48802.

Almost surely, 2388380112 is an apocalyptic number.

It is an amenable number.

388380112 is a deficient number, since it is larger than the sum of its proper divisors (364463444).

388380112 is a wasteful number, since it uses less digits than its factorization.

388380112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11526 (or 11520 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 34.

The square root of 388380112 is about 19707.3618731681. The cubic root of 388380112 is about 729.6014037145.

The spelling of 388380112 in words is "three hundred eighty-eight million, three hundred eighty thousand, one hundred twelve".

Divisors: 1 2 4 8 16 2777 5554 8741 11108 17482 22216 34964 44432 69928 139856 24273757 48547514 97095028 194190056 388380112