102520818 has 48 divisors (see below), whose sum is σ = 228458880. Its totient is φ = 33210528.

The previous prime is 102520811. The next prime is 102520823. The reversal of 102520818 is 818025201.

It is a junction number, because it is equal to n+sod(n) for n = 102520791 and 102520800.

It is not an unprimeable number, because it can be changed into a prime (102520811) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 151096 + ... + 151772.

It is an arithmetic number, because the mean of its divisors is an integer number (4759560).

Almost surely, 2^102520818 is an apocalyptic number.

102520818 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

102520818 is an abundant number, since it is smaller than the sum of its proper divisors (125938062).

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

102520818 is a wasteful number, since it uses less digits than its factorization.

102520818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 911 (or 908 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 27.

The square root of 102520818 is about 10125.2564411969. The cubic root of 102520818 is about 468.0267626598.

The spelling of 102520818 in words is "one hundred two million, five hundred twenty thousand, eight hundred eighteen".