138285070 has 32 divisors (see below), whose sum is σ = 310334976. Its totient is φ = 43101600.

The previous prime is 138285061. The next prime is 138285071. The reversal of 138285070 is 70582831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138285071) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89026 + ... + 90565.

It is an arithmetic number, because the mean of its divisors is an integer number (9697968).

Almost surely, 2^138285070 is an apocalyptic number.

138285070 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

138285070 is an abundant number, since it is smaller than the sum of its proper divisors (172049906).

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

138285070 is a wasteful number, since it uses less digits than its factorization.

138285070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179616.

The product of its (nonzero) digits is 13440, while the sum is 34.

The square root of 138285070 is about 11759.4672498375. The cubic root of 138285070 is about 517.1205118466.

The spelling of 138285070 in words is "one hundred thirty-eight million, two hundred eighty-five thousand, seventy".