138550030 has 8 divisors (see below), whose sum is σ = 249390072. Its totient is φ = 55420008.

The previous prime is 138550019. The next prime is 138550103. The reversal of 138550030 is 30055831.

It is a happy number.

138550030 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a super-2 number, since 2×138550030² = 38392221626001800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 138549977 and 138550004.

It is a congruent number.

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, 6927492 + ... + 6927511.

It is an arithmetic number, because the mean of its divisors is an integer number (31173759).

Almost surely, 2^138550030 is an apocalyptic number.

138550030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

138550030 is a deficient number, since it is larger than the sum of its proper divisors (110840042).

138550030 is a wasteful number, since it uses less digits than its factorization.

138550030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13855010.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 138550030 is about 11770.7276750420. The cubic root of 138550030 is about 517.4505760013.

It can be divided in two parts, 1385 and 50030, that added together give a palindrome (51415).

The spelling of 138550030 in words is "one hundred thirty-eight million, five hundred fifty thousand, thirty".