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3040581 = 31013527
BaseRepresentation
bin1011100110010101000101
312201110220010
423212111011
51234244311
6145100433
734562445
oct13462505
95643803
103040581
111797485
121027719
13825c7b
14592125
15400da6
hex2e6545

3040581 has 4 divisors (see below), whose sum is σ = 4054112. Its totient is φ = 2027052.

The previous prime is 3040579. The next prime is 3040591. The reversal of 3040581 is 1850403.

3040581 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 3040581 - 21 = 3040579 is a prime.

It is a super-2 number, since 2×30405812 = 18490265635122, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3040561) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 506761 + ... + 506766.

It is an arithmetic number, because the mean of its divisors is an integer number (1013528).

Almost surely, 23040581 is an apocalyptic number.

It is an amenable number.

3040581 is a deficient number, since it is larger than the sum of its proper divisors (1013531).

3040581 is a wasteful number, since it uses less digits than its factorization.

3040581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1013530.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 3040581 is about 1743.7261826330. The cubic root of 3040581 is about 144.8723569518.

Adding to 3040581 its reverse (1850403), we get a palindrome (4890984).

The spelling of 3040581 in words is "three million, forty thousand, five hundred eighty-one".

Divisors: 1 3 1013527 3040581