102840620 has 24 divisors (see below), whose sum is σ = 218702400. Its totient is φ = 40614912.

The previous prime is 102840607. The next prime is 102840623. The reversal of 102840620 is 26048201.

It is not an unprimeable number, because it can be changed into a prime (102840623) 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, 30965 + ... + 34124.

It is an arithmetic number, because the mean of its divisors is an integer number (9112600).

Almost surely, 2^102840620 is an apocalyptic number.

102840620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102840620 is an abundant number, since it is smaller than the sum of its proper divisors (115861780).

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

102840620 is a wasteful number, since it uses less digits than its factorization.

102840620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65177 (or 65175 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 102840620 is about 10141.0364361834. The cubic root of 102840620 is about 468.5129095534.

Adding to 102840620 its reverse (26048201), we get a palindrome (128888821).

The spelling of 102840620 in words is "one hundred two million, eight hundred forty thousand, six hundred twenty".