Search a number
-
+
530538388 = 22193168687
BaseRepresentation
bin11111100111110…
…101111110010100
31100222022010211221
4133213311332110
52041304212023
6124351140124
716101334102
oct3747657624
91328263757
10530538388
11252525386
12129814644
1385bb8153
1450664c72
153189b85d
hex1f9f5f94

530538388 has 12 divisors (see below), whose sum is σ = 928936512. Its totient is φ = 265127960.

The previous prime is 530538373. The next prime is 530538389. The reversal of 530538388 is 883835035.

It is a super-2 number, since 2×5305383882 = 562941962283277088, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (530538389) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26620 + ... + 42067.

It is an arithmetic number, because the mean of its divisors is an integer number (77411376).

Almost surely, 2530538388 is an apocalyptic number.

It is an amenable number.

530538388 is a deficient number, since it is larger than the sum of its proper divisors (398398124).

530538388 is a wasteful number, since it uses less digits than its factorization.

530538388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70622 (or 70620 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 43.

The square root of 530538388 is about 23033.4189385771. The cubic root of 530538388 is about 809.5411657326.

The spelling of 530538388 in words is "five hundred thirty million, five hundred thirty-eight thousand, three hundred eighty-eight".

Divisors: 1 2 4 1931 3862 7724 68687 137374 274748 132634597 265269194 530538388