138063020 has 24 divisors (see below), whose sum is σ = 302539104. Its totient is φ = 52823936.

The previous prime is 138063019. The next prime is 138063047. The reversal of 138063020 is 20360831.

It is a super-2 number, since 2×138063020² = 38122794983040800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 149609 + ... + 150528.

It is an arithmetic number, because the mean of its divisors is an integer number (12605796).

Almost surely, 2^138063020 is an apocalyptic number.

138063020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

138063020 is an abundant number, since it is smaller than the sum of its proper divisors (164476084).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

138063020 is a wasteful number, since it uses less digits than its factorization.

138063020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300169 (or 300167 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 138063020 is about 11750.0221276387. The cubic root of 138063020 is about 516.8435763704.

The spelling of 138063020 in words is "one hundred thirty-eight million, sixty-three thousand, twenty".