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6249980 = 2251128409
BaseRepresentation
bin10111110101110111111100
3102202112100202
4113311313330
53044444410
6341543032
7104060342
oct27656774
912675322
106249980
113589780
122114a78
1313aaa19
14b89992
15836ca5
hex5f5dfc

6249980 has 24 divisors (see below), whose sum is σ = 14318640. Its totient is φ = 2272640.

The previous prime is 6249979. The next prime is 6249989. The reversal of 6249980 is 899426.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6249989) 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 7 ways as a sum of consecutive naturals, for example, 13985 + ... + 14424.

It is an arithmetic number, because the mean of its divisors is an integer number (596610).

Almost surely, 26249980 is an apocalyptic number.

It is an amenable number.

6249980 is an abundant number, since it is smaller than the sum of its proper divisors (8068660).

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

6249980 is a wasteful number, since it uses less digits than its factorization.

6249980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28429 (or 28427 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 6249980 is about 2499.9959999968. The cubic root of 6249980 is about 184.2013784501.

The spelling of 6249980 in words is "six million, two hundred forty-nine thousand, nine hundred eighty".

Divisors: 1 2 4 5 10 11 20 22 44 55 110 220 28409 56818 113636 142045 284090 312499 568180 624998 1249996 1562495 3124990 6249980