138062280 has 32 divisors (see below), whose sum is σ = 414187200. Its totient is φ = 36816576.

The previous prime is 138062263. The next prime is 138062291. The reversal of 138062280 is 82260831.

It is a super-2 number, since 2×138062280² = 38122386317596800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 575140 + ... + 575379.

It is an arithmetic number, because the mean of its divisors is an integer number (12943350).

Almost surely, 2^138062280 is an apocalyptic number.

138062280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

138062280 is an abundant number, since it is smaller than the sum of its proper divisors (276124920).

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

138062280 is a wasteful number, since it uses less digits than its factorization.

138062280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1150533 (or 1150529 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 138062280 is about 11749.9906382941. The cubic root of 138062280 is about 516.8426529638.

The spelling of 138062280 in words is "one hundred thirty-eight million, sixty-two thousand, two hundred eighty".