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508552138 = 21913382951
BaseRepresentation
bin11110010011111…
…110001111001010
31022102221010101101
4132103332033022
52020142132023
6122244012014
715413423203
oct3623761712
91272833341
10508552138
11241078826
1212239100a
138148a933
144b7805aa
152e9a71ad
hex1e4fe3ca

508552138 has 8 divisors (see below), whose sum is σ = 802977120. Its totient is φ = 240893100.

The previous prime is 508552123. The next prime is 508552139. The reversal of 508552138 is 831255805.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 508552097 and 508552106.

It is not an unprimeable number, because it can be changed into a prime (508552139) 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, 6691438 + ... + 6691513.

It is an arithmetic number, because the mean of its divisors is an integer number (100372140).

Almost surely, 2508552138 is an apocalyptic number.

508552138 is a deficient number, since it is larger than the sum of its proper divisors (294424982).

508552138 is a wasteful number, since it uses less digits than its factorization.

508552138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13382972.

The product of its (nonzero) digits is 48000, while the sum is 37.

The square root of 508552138 is about 22551.1005939843. The cubic root of 508552138 is about 798.2001924441.

The spelling of 508552138 in words is "five hundred eight million, five hundred fifty-two thousand, one hundred thirty-eight".

Divisors: 1 2 19 38 13382951 26765902 254276069 508552138