102006520 has 64 divisors (see below), whose sum is σ = 286156800. Its totient is φ = 31793280.

The previous prime is 102006493. The next prime is 102006539. The reversal of 102006520 is 25600201.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 102006494 and 102006503.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13480 + ... + 19639.

It is an arithmetic number, because the mean of its divisors is an integer number (4471200).

Almost surely, 2^102006520 is an apocalyptic number.

102006520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102006520 is an abundant number, since it is smaller than the sum of its proper divisors (184150280).

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

102006520 is a wasteful number, since it uses less digits than its factorization.

102006520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33148 (or 33144 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 102006520 is about 10099.8277213030. The cubic root of 102006520 is about 467.2428280428.

Adding to 102006520 its reverse (25600201), we get a palindrome (127606721).

The spelling of 102006520 in words is "one hundred two million, six thousand, five hundred twenty".