138838462 has 24 divisors (see below), whose sum is σ = 243383616. Its totient is φ = 59226048.

The previous prime is 138838459. The next prime is 138838463. The reversal of 138838462 is 264838831.

It is a super-2 number, since 2×138838462² = 38552237061050888, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138838463) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18678 + ... + 25030.

It is an arithmetic number, because the mean of its divisors is an integer number (10140984).

Almost surely, 2^138838462 is an apocalyptic number.

138838462 is a deficient number, since it is larger than the sum of its proper divisors (104545154).

138838462 is a wasteful number, since it uses less digits than its factorization.

138838462 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6592 (or 6585 counting only the distinct ones).

The product of its digits is 221184, while the sum is 43.

The square root of 138838462 is about 11782.9733938425. The cubic root of 138838462 is about 517.8094015115.

The spelling of 138838462 in words is "one hundred thirty-eight million, eight hundred thirty-eight thousand, four hundred sixty-two".