138852810 has 48 divisors (see below), whose sum is σ = 366421536. Its totient is φ = 36473184.

The previous prime is 138852809. The next prime is 138852851. The reversal of 138852810 is 18258831.

It is a super-2 number, since 2×138852810² = 38560205689792200, which contains 22 as substring.

It is a Curzon number.

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 23 ways as a sum of consecutive naturals, for example, 5484 + ... + 17543.

It is an arithmetic number, because the mean of its divisors is an integer number (7633782).

Almost surely, 2^138852810 is an apocalyptic number.

138852810 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

138852810 is an abundant number, since it is smaller than the sum of its proper divisors (227568726).

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

138852810 is a wasteful number, since it uses less digits than its factorization.

138852810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23107 (or 23104 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 36.

The square root of 138852810 is about 11783.5822227369. The cubic root of 138852810 is about 517.8272382437.

The spelling of 138852810 in words is "one hundred thirty-eight million, eight hundred fifty-two thousand, eight hundred ten".