102506620 has 24 divisors (see below), whose sum is σ = 216052704. Its totient is φ = 40852416.

The previous prime is 102506609. The next prime is 102506623. The reversal of 102506620 is 26605201.

It is a junction number, because it is equal to n+sod(n) for n = 102506591 and 102506600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102506623) by changing a digit.

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, 3712 + ... + 14791.

It is an arithmetic number, because the mean of its divisors is an integer number (9002196).

Almost surely, 2^102506620 is an apocalyptic number.

102506620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102506620 is an abundant number, since it is smaller than the sum of its proper divisors (113546084).

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

102506620 is a wasteful number, since it uses less digits than its factorization.

102506620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18789 (or 18787 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 102506620 is about 10124.5552988761. Note that the first 3 decimals coincide. The cubic root of 102506620 is about 468.0051561513.

The spelling of 102506620 in words is "one hundred two million, five hundred six thousand, six hundred twenty".