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7056381 = 337151421
BaseRepresentation
bin11010111010101111111101
3111021111112110
4122322233331
53301301011
6411124233
7113656353
oct32725775
914244473
107056381
113a8a622
122443679
131600a97
14d197d3
15945ba6
hex6babfd

7056381 has 16 divisors (see below), whose sum is σ = 9749888. Its totient is φ = 4536000.

The previous prime is 7056349. The next prime is 7056383. The reversal of 7056381 is 1836507.

It is not a de Polignac number, because 7056381 - 25 = 7056349 is a prime.

It is a super-2 number, since 2×70563812 = 99585025634322, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7056383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16551 + ... + 16971.

It is an arithmetic number, because the mean of its divisors is an integer number (609368).

Almost surely, 27056381 is an apocalyptic number.

It is an amenable number.

7056381 is a deficient number, since it is larger than the sum of its proper divisors (2693507).

7056381 is a wasteful number, since it uses less digits than its factorization.

7056381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 612.

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 7056381 is about 2656.3849495132. The cubic root of 7056381 is about 191.8053311207.

The spelling of 7056381 in words is "seven million, fifty-six thousand, three hundred eighty-one".

Divisors: 1 3 37 111 151 421 453 1263 5587 15577 16761 46731 63571 190713 2352127 7056381