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3057140 = 225152857
BaseRepresentation
bin1011101010010111110100
312202022121102
423222113310
51240312030
6145305232
734661642
oct13522764
95668542
103057140
1117a8969
121035218
13830678
14598192
15405c45
hex2ea5f4

3057140 has 12 divisors (see below), whose sum is σ = 6420036. Its totient is φ = 1222848.

The previous prime is 3057113. The next prime is 3057163. The reversal of 3057140 is 417503.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1752976 + 1304164 = 1324^2 + 1142^2 .

It is a super-2 number, since 2×30571402 = 18692209959200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 152857 = 3057140 / (3 + 0 + 5 + 7 + 1 + 4 + 0).

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 76409 + ... + 76448.

It is an arithmetic number, because the mean of its divisors is an integer number (535003).

Almost surely, 23057140 is an apocalyptic number.

It is an amenable number.

3057140 is an abundant number, since it is smaller than the sum of its proper divisors (3362896).

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

3057140 is a wasteful number, since it uses less digits than its factorization.

3057140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152866 (or 152864 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 20.

The square root of 3057140 is about 1748.4679007634. The cubic root of 3057140 is about 145.1348725269.

The spelling of 3057140 in words is "three million, fifty-seven thousand, one hundred forty".

Divisors: 1 2 4 5 10 20 152857 305714 611428 764285 1528570 3057140