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8820980 = 225729001
BaseRepresentation
bin100001101001…
…100011110100
3121121011002222
4201221203310
54224232410
6513021512
7134656100
oct41514364
917534088
108820980
114a85373
122b54898
131a9b01c
141258900
15b93955
hex8698f4

8820980 has 36 divisors (see below), whose sum is σ = 21550788. Its totient is φ = 3024000.

The previous prime is 8820971. The next prime is 8821003. The reversal of 8820980 is 890288.

It can be written as a sum of positive squares in 2 ways, for example, as 2328676 + 6492304 = 1526^2 + 2548^2 .

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 8820980.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3521 + ... + 5480.

It is an arithmetic number, because the mean of its divisors is an integer number (598633).

Almost surely, 28820980 is an apocalyptic number.

It is an amenable number.

8820980 is an abundant number, since it is smaller than the sum of its proper divisors (12729808).

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

8820980 is a wasteful number, since it uses less digits than its factorization.

8820980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9024 (or 9015 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 35.

The square root of 8820980 is about 2970.0134679829. The cubic root of 8820980 is about 206.6199628537.

It can be divided in two parts, 8820 and 980, that multiplied together give a square (8643600 = 29402).

The spelling of 8820980 in words is "eight million, eight hundred twenty thousand, nine hundred eighty".

Divisors: 1 2 4 5 7 10 14 20 28 35 49 70 98 140 196 245 490 980 9001 18002 36004 45005 63007 90010 126014 180020 252028 315035 441049 630070 882098 1260140 1764196 2205245 4410490 8820980