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1388193 = 31393329
BaseRepresentation
bin101010010111010100001
32121112020120
411102322201
5323410233
645430453
714541132
oct5227241
92545216
101388193
11868a74
1256b429
13397b21
14281c89
151c64b3
hex152ea1

1388193 has 8 divisors (see below), whose sum is σ = 1864800. Its totient is φ = 918528.

The previous prime is 1388183. The next prime is 1388227. The reversal of 1388193 is 3918831.

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

It is not a de Polignac number, because 1388193 - 25 = 1388161 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (1388113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1248 + ... + 2081.

It is an arithmetic number, because the mean of its divisors is an integer number (233100).

21388193 is an apocalyptic number.

It is an amenable number.

1388193 is a deficient number, since it is larger than the sum of its proper divisors (476607).

1388193 is a wasteful number, since it uses less digits than its factorization.

1388193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3471.

The product of its digits is 5184, while the sum is 33.

The square root of 1388193 is about 1178.2160243351. The cubic root of 1388193 is about 111.5535211960.

The spelling of 1388193 in words is "one million, three hundred eighty-eight thousand, one hundred ninety-three".

Divisors: 1 3 139 417 3329 9987 462731 1388193