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7680630 = 235256021
BaseRepresentation
bin11101010011001001110110
3112110012211210
4131103021312
53431240010
6432342250
7122166336
oct35231166
915405753
107680630
114376631
1226a4986
13178bc69
14103d0c6
15a1ab20
hex753276

7680630 has 16 divisors (see below), whose sum is σ = 18433584. Its totient is φ = 2048160.

The previous prime is 7680613. The next prime is 7680637. The reversal of 7680630 is 360867.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 256021 = 7680630 / (7 + 6 + 8 + 0 + 6 + 3 + 0).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7680637) 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, 127981 + ... + 128040.

It is an arithmetic number, because the mean of its divisors is an integer number (1152099).

Almost surely, 27680630 is an apocalyptic number.

7680630 is an abundant number, since it is smaller than the sum of its proper divisors (10752954).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7680630 is a wasteful number, since it uses less digits than its factorization.

7680630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256031.

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 7680630 is about 2771.3949556135. The cubic root of 7680630 is about 197.3023606378.

The spelling of 7680630 in words is "seven million, six hundred eighty thousand, six hundred thirty".

Divisors: 1 2 3 5 6 10 15 30 256021 512042 768063 1280105 1536126 2560210 3840315 7680630