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628742 = 23110141
BaseRepresentation
bin10011001100000000110
31011221110202
42121200012
5130104432
621250502
75226032
oct2314006
91157422
10628742
1139a424
12263a32
1319024a
141251c2
15c6462
hex99806

628742 has 8 divisors (see below), whose sum is σ = 973632. Its totient is φ = 304200.

The previous prime is 628721. The next prime is 628753. The reversal of 628742 is 247826.

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

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 628742.

It is an unprimeable number.

628742 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5009 + ... + 5132.

It is an arithmetic number, because the mean of its divisors is an integer number (121704).

2628742 is an apocalyptic number.

628742 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

628742 is a deficient number, since it is larger than the sum of its proper divisors (344890).

628742 is a wasteful number, since it uses less digits than its factorization.

628742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10174.

The product of its digits is 5376, while the sum is 29.

The square root of 628742 is about 792.9325318084. The cubic root of 628742 is about 85.6690907243.

The spelling of 628742 in words is "six hundred twenty-eight thousand, seven hundred forty-two".

Divisors: 1 2 31 62 10141 20282 314371 628742