102000638 has 8 divisors (see below), whose sum is σ = 157136232. Its totient is φ = 49621896.

The previous prime is 102000631. The next prime is 102000713. The reversal of 102000638 is 836000201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102000631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 689120 + ... + 689267.

It is an arithmetic number, because the mean of its divisors is an integer number (19642029).

Almost surely, 2^102000638 is an apocalyptic number.

102000638 is a deficient number, since it is larger than the sum of its proper divisors (55135594).

102000638 is a wasteful number, since it uses less digits than its factorization.

102000638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1378426.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 102000638 is about 10099.5365240193. The cubic root of 102000638 is about 467.2338469988.

Adding to 102000638 its reverse (836000201), we get a palindrome (938000839).

The spelling of 102000638 in words is "one hundred two million, six hundred thirty-eight", and thus it is an aban number.