138532302 has 32 divisors (see below), whose sum is σ = 308597760. Its totient is φ = 46065240.

The previous prime is 138532297. The next prime is 138532309. The reversal of 138532302 is 203235831.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138532309) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 21027 + ... + 26817.

It is an arithmetic number, because the mean of its divisors is an integer number (9643680).

Almost surely, 2^138532302 is an apocalyptic number.

138532302 is an abundant number, since it is smaller than the sum of its proper divisors (170065458).

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

138532302 is a wasteful number, since it uses less digits than its factorization.

138532302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6245 (or 6239 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 138532302 is about 11769.9745964042. The cubic root of 138532302 is about 517.4285051410.

The spelling of 138532302 in words is "one hundred thirty-eight million, five hundred thirty-two thousand, three hundred two".