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1387914 = 2311171237
BaseRepresentation
bin101010010110110001010
32121111212020
411102312022
5323403124
645425310
714540253
oct5226612
92544766
101387914
11868840
1256b236
13397968
14281b2a
151c6379
hex152d8a

1387914 has 32 divisors (see below), whose sum is σ = 3208896. Its totient is φ = 395520.

The previous prime is 1387913. The next prime is 1387921. The reversal of 1387914 is 4197831.

It is a super-3 number, since 3×13879143 = 8020638163332923832, which contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (1387913) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 504 + ... + 1740.

It is an arithmetic number, because the mean of its divisors is an integer number (100278).

21387914 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1387914, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1604448).

1387914 is an abundant number, since it is smaller than the sum of its proper divisors (1820982).

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

1387914 is a wasteful number, since it uses less digits than its factorization.

1387914 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1270.

The product of its digits is 6048, while the sum is 33.

The square root of 1387914 is about 1178.0976190452. The cubic root of 1387914 is about 111.5460473270.

The spelling of 1387914 in words is "one million, three hundred eighty-seven thousand, nine hundred fourteen".

Divisors: 1 2 3 6 11 17 22 33 34 51 66 102 187 374 561 1122 1237 2474 3711 7422 13607 21029 27214 40821 42058 63087 81642 126174 231319 462638 693957 1387914