5228512138 has 12 divisors (see below), whose sum is σ = 8122536630. Its totient is φ = 2524108496.

The previous prime is 5228512127. The next prime is 5228512153. The reversal of 5228512138 is 8312158225.

It can be written as a sum of positive squares in 3 ways, for example, as 3654565209 + 1573946929 = 60453^2 + 39673^2 .

It is a junction number, because it is equal to n+sod(n) for n = 5228512097 and 5228512106.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1552573 + ... + 1555936.

Almost surely, 2^5228512138 is an apocalyptic number.

5228512138 is a gapful number since it is divisible by the number (58) formed by its first and last digit.

5228512138 is a deficient number, since it is larger than the sum of its proper divisors (2894024492).

5228512138 is a wasteful number, since it uses less digits than its factorization.

5228512138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3108569 (or 3108540 counting only the distinct ones).

The product of its digits is 38400, while the sum is 37.

The square root of 5228512138 is about 72308.4513594365. The cubic root of 5228512138 is about 1735.6388933427.

The spelling of 5228512138 in words is "five billion, two hundred twenty-eight million, five hundred twelve thousand, one hundred thirty-eight".