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8380437 = 313214883
BaseRepresentation
bin11111111110000000010101
3120202202210120
4133332000111
54121133222
6455342153
7131142522
oct37760025
916682716
108380437
11480438a
122981959
131975650
141182149
15b0815c
hex7fe015

8380437 has 8 divisors (see below), whose sum is σ = 12033504. Its totient is φ = 5157168.

The previous prime is 8380417. The next prime is 8380451. The reversal of 8380437 is 7340838.

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

It is not a de Polignac number, because 8380437 - 26 = 8380373 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.

8380437 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 8380398 and 8380407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8380417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107403 + ... + 107480.

It is an arithmetic number, because the mean of its divisors is an integer number (1504188).

Almost surely, 28380437 is an apocalyptic number.

It is an amenable number.

8380437 is a deficient number, since it is larger than the sum of its proper divisors (3653067).

8380437 is a wasteful number, since it uses less digits than its factorization.

8380437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214899.

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 8380437 is about 2894.8984438146. The cubic root of 8380437 is about 203.1213410623.

The spelling of 8380437 in words is "eight million, three hundred eighty thousand, four hundred thirty-seven".

Divisors: 1 3 13 39 214883 644649 2793479 8380437