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1387814 = 21315297
BaseRepresentation
bin101010010110100100110
32121111201112
411102310212
5323402224
645425022
714540051
oct5226446
92544645
101387814
1186875a
1256b172
133978bc
14281a98
151c630e
hex152d26

1387814 has 8 divisors (see below), whose sum is σ = 2098008. Its totient is φ = 688480.

The previous prime is 1387807. The next prime is 1387819. The reversal of 1387814 is 4187831.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1387819) 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, 2387 + ... + 2910.

It is an arithmetic number, because the mean of its divisors is an integer number (262251).

21387814 is an apocalyptic number.

1387814 is a deficient number, since it is larger than the sum of its proper divisors (710194).

1387814 is a wasteful number, since it uses less digits than its factorization.

1387814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5430.

The product of its digits is 5376, while the sum is 32.

The square root of 1387814 is about 1178.0551769760. The cubic root of 1387814 is about 111.5433682771.

The spelling of 1387814 in words is "one million, three hundred eighty-seven thousand, eight hundred fourteen".

Divisors: 1 2 131 262 5297 10594 693907 1387814