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512072 = 23112232
BaseRepresentation
bin1111101000001001000
3222000102122
41331001020
5112341242
614550412
74231631
oct1750110
9860378
10512072
1131a800
12208408
1314c102
14d4888
15a1ad2
hex7d048

512072 has 36 divisors (see below), whose sum is σ = 1103235. Its totient is φ = 222640.

The previous prime is 512059. The next prime is 512093. The reversal of 512072 is 270215.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 256036 + 256036 = 506^2 + 506^2 .

It is an ABA number since it can be written as A⋅BA, here for A=2, B=506.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 512072.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 22253 + ... + 22275.

512072 is a Friedman number, since it can be written as 2*(507-1)^2, using all its digits and the basic arithmetic operations.

2512072 is an apocalyptic number.

512072 is the 383-rd centered heptagonal number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 512072

512072 is an abundant number, since it is smaller than the sum of its proper divisors (591163).

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

512072 is a wasteful number, since it uses less digits than its factorization.

512072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74 (or 36 counting only the distinct ones).

The product of its (nonzero) digits is 140, while the sum is 17.

The square root of 512072 is about 715.5920625608. The cubic root of 512072 is about 80.0037498242.

Adding to 512072 its reverse (270215), we get a palindrome (782287).

The spelling of 512072 in words is "five hundred twelve thousand, seventy-two".

Divisors: 1 2 4 8 11 22 23 44 46 88 92 121 184 242 253 484 506 529 968 1012 1058 2024 2116 2783 4232 5566 5819 11132 11638 22264 23276 46552 64009 128018 256036 512072