102002538 has 16 divisors (see below), whose sum is σ = 222551136. Its totient is φ = 30909840.

The previous prime is 102002531. The next prime is 102002557. The reversal of 102002538 is 835200201.

It is not an unprimeable number, because it can be changed into a prime (102002531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 772681 + ... + 772812.

It is an arithmetic number, because the mean of its divisors is an integer number (13909446).

Almost surely, 2^102002538 is an apocalyptic number.

102002538 is an abundant number, since it is smaller than the sum of its proper divisors (120548598).

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

102002538 is a wasteful number, since it uses less digits than its factorization.

102002538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1545509.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 102002538 is about 10099.6305873037. The cubic root of 102002538 is about 467.2367480878.

Adding to 102002538 its reverse (835200201), we get a palindrome (937202739).

The spelling of 102002538 in words is "one hundred two million, two thousand, five hundred thirty-eight".