138700210 has 16 divisors (see below), whose sum is σ = 272356992. Its totient is φ = 50436400.

The previous prime is 138700207. The next prime is 138700223. The reversal of 138700210 is 12007831.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 630346 + ... + 630565.

It is an arithmetic number, because the mean of its divisors is an integer number (17022312).

Almost surely, 2^138700210 is an apocalyptic number.

138700210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

138700210 is a deficient number, since it is larger than the sum of its proper divisors (133656782).

138700210 is a wasteful number, since it uses less digits than its factorization.

138700210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1260929.

The product of its (nonzero) digits is 336, while the sum is 22.

The square root of 138700210 is about 11777.1053319566. The cubic root of 138700210 is about 517.6374703828.

The spelling of 138700210 in words is "one hundred thirty-eight million, seven hundred thousand, two hundred ten".