102247638 has 8 divisors (see below), whose sum is σ = 204495288. Its totient is φ = 34082544.

The previous prime is 102247637. The next prime is 102247643. The reversal of 102247638 is 836742201.

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

102247638 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 102247599 and 102247608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102247631) 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, 8520631 + ... + 8520642.

It is an arithmetic number, because the mean of its divisors is an integer number (25561911).

Almost surely, 2^102247638 is an apocalyptic number.

102247638 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

102247638 is a wasteful number, since it uses less digits than its factorization.

102247638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17041278.

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 102247638 is about 10111.7574140206. The cubic root of 102247638 is about 467.6106868991.

Adding to 102247638 its reverse (836742201), we get a palindrome (938989839).

The spelling of 102247638 in words is "one hundred two million, two hundred forty-seven thousand, six hundred thirty-eight".