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542872 = 231131199
BaseRepresentation
bin10000100100010011000
31000120200101
42010202120
5114332442
615345144
74420501
oct2044230
91016611
10542872
11340960
122221b4
13160135
14101ba8
15aacb7
hex84898

542872 has 32 divisors (see below), whose sum is σ = 1152000. Its totient is φ = 237600.

The previous prime is 542837. The next prime is 542873. The reversal of 542872 is 278245.

It is a d-powerful number, because it can be written as 54 + 43 + 82 + 210 + 75 + 219 .

It is a self number, because there is not a number n which added to its sum of digits gives 542872.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542873) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2629 + ... + 2827.

It is an arithmetic number, because the mean of its divisors is an integer number (36000).

2542872 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 542872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (576000).

542872 is an abundant number, since it is smaller than the sum of its proper divisors (609128).

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

542872 is a wasteful number, since it uses less digits than its factorization.

542872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247 (or 243 counting only the distinct ones).

The product of its digits is 4480, while the sum is 28.

The square root of 542872 is about 736.7984799116. The cubic root of 542872 is about 81.5766401158.

It can be divided in two parts, 54287 and 2, that added together give a square (54289 = 2332).

The spelling of 542872 in words is "five hundred forty-two thousand, eight hundred seventy-two".

Divisors: 1 2 4 8 11 22 31 44 62 88 124 199 248 341 398 682 796 1364 1592 2189 2728 4378 6169 8756 12338 17512 24676 49352 67859 135718 271436 542872