102820436 has 12 divisors (see below), whose sum is σ = 180011328. Its totient is φ = 51388632.

The previous prime is 102820433. The next prime is 102820453. The reversal of 102820436 is 634028201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102820433) 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 3 ways as a sum of consecutive naturals, for example, 10565 + ... + 17811.

It is an arithmetic number, because the mean of its divisors is an integer number (15000944).

Almost surely, 2^102820436 is an apocalyptic number.

It is an amenable number.

102820436 is a deficient number, since it is larger than the sum of its proper divisors (77190892).

102820436 is a wasteful number, since it uses less digits than its factorization.

102820436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10798 (or 10796 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 102820436 is about 10140.0412227959. The cubic root of 102820436 is about 468.4822566742.

Adding to 102820436 its reverse (634028201), we get a palindrome (736848637).

The spelling of 102820436 in words is "one hundred two million, eight hundred twenty thousand, four hundred thirty-six".