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3870980 = 225193549
BaseRepresentation
bin1110110001000100000100
321021122222122
432301010010
51442332410
6214545112
744621441
oct16610404
97248878
103870980
112204363
121368198
13a56c29
1472a9c8
15516e55
hex3b1104

3870980 has 12 divisors (see below), whose sum is σ = 8129100. Its totient is φ = 1548384.

The previous prime is 3870959. The next prime is 3870983. The reversal of 3870980 is 890783.

It can be written as a sum of positive squares in 2 ways, for example, as 2353156 + 1517824 = 1534^2 + 1232^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 3870980.

It is not an unprimeable number, because it can be changed into a prime (3870983) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96755 + ... + 96794.

It is an arithmetic number, because the mean of its divisors is an integer number (677425).

Almost surely, 23870980 is an apocalyptic number.

It is an amenable number.

3870980 is an abundant number, since it is smaller than the sum of its proper divisors (4258120).

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

3870980 is a wasteful number, since it uses less digits than its factorization.

3870980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193558 (or 193556 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 3870980 is about 1967.4806225221. The cubic root of 3870980 is about 157.0146983413.

The spelling of 3870980 in words is "three million, eight hundred seventy thousand, nine hundred eighty".

Divisors: 1 2 4 5 10 20 193549 387098 774196 967745 1935490 3870980