102028404 has 48 divisors (see below), whose sum is σ = 254374400. Its totient is φ = 31733856.

The previous prime is 102028403. The next prime is 102028411. The reversal of 102028404 is 404820201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102028403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11937 + ... + 18615.

Almost surely, 2^102028404 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 102028404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (127187200).

102028404 is an abundant number, since it is smaller than the sum of its proper divisors (152345996).

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

102028404 is a wasteful number, since it uses less digits than its factorization.

102028404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6772 (or 6770 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

The square root of 102028404 is about 10100.9110480194. The cubic root of 102028404 is about 467.2762390147.

Adding to 102028404 its reverse (404820201), we get a palindrome (506848605).

The spelling of 102028404 in words is "one hundred two million, twenty-eight thousand, four hundred four".