138411628 has 12 divisors (see below), whose sum is σ = 244718152. Its totient is φ = 68492160.

The previous prime is 138411619. The next prime is 138411659. The reversal of 138411628 is 826114831.

It is a super-2 number, since 2×138411628² = 38315557531220768, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 138411593 and 138411602.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 177978 + ... + 178753.

Almost surely, 2^138411628 is an apocalyptic number.

It is an amenable number.

138411628 is a deficient number, since it is larger than the sum of its proper divisors (106306524).

138411628 is a wasteful number, since it uses less digits than its factorization.

138411628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356832 (or 356830 counting only the distinct ones).

The product of its digits is 9216, while the sum is 34.

The square root of 138411628 is about 11764.8471303286. The cubic root of 138411628 is about 517.2782193578.

The spelling of 138411628 in words is "one hundred thirty-eight million, four hundred eleven thousand, six hundred twenty-eight".