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540628 = 221121117
BaseRepresentation
bin10000011111111010100
31000110121021
42003333110
5114300003
615330524
74411114
oct2037724
91013537
10540628
1133a200
12220a44
1315c0ca
14101044
15aa2bd
hex83fd4

540628 has 18 divisors (see below), whose sum is σ = 1040858. Its totient is φ = 245520.

The previous prime is 540619. The next prime is 540629. The reversal of 540628 is 826045.

It can be written as a sum of positive squares in only one way, i.e., 327184 + 213444 = 572^2 + 462^2 .

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (540629) 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 5 ways as a sum of consecutive naturals, for example, 75 + ... + 1042.

2540628 is an apocalyptic number.

It is an amenable number.

540628 is a deficient number, since it is larger than the sum of its proper divisors (500230).

540628 is a wasteful number, since it uses less digits than its factorization.

540628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1143 (or 1130 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 540628 is about 735.2740985510. The cubic root of 540628 is about 81.4640839399.

The spelling of 540628 in words is "five hundred forty thousand, six hundred twenty-eight".

Divisors: 1 2 4 11 22 44 121 242 484 1117 2234 4468 12287 24574 49148 135157 270314 540628