102820004 has 12 divisors (see below), whose sum is σ = 205640064. Its totient is φ = 44065704.

The previous prime is 102819991. The next prime is 102820033. The reversal of 102820004 is 400028201.

102820004 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1836044 + ... + 1836099.

It is an arithmetic number, because the mean of its divisors is an integer number (17136672).

Almost surely, 2^102820004 is an apocalyptic number.

102820004 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

102820004 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

102820004 is a wasteful number, since it uses less digits than its factorization.

102820004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3672154 (or 3672152 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 102820004 is about 10140.0199210850. The cubic root of 102820004 is about 468.4816005640.

Adding to 102820004 its reverse (400028201), we get a palindrome (502848205).

The spelling of 102820004 in words is "one hundred two million, eight hundred twenty thousand, four".