1028280438 has 36 divisors (see below), whose sum is σ = 2266480788. Its totient is φ = 336930120.

The previous prime is 1028280427. The next prime is 1028280499. The reversal of 1028280438 is 8340828201.

It is a happy number.

1028280438 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 54453 + ... + 70863.

Almost surely, 2^1028280438 is an apocalyptic number.

1028280438 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1028280438 is an abundant number, since it is smaller than the sum of its proper divisors (1238200350).

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

1028280438 is a wasteful number, since it uses less digits than its factorization.

1028280438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16537 (or 16475 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 36.

The square root of 1028280438 is about 32066.8120959973. The cubic root of 1028280438 is about 1009.3393182669.

The spelling of 1028280438 in words is "one billion, twenty-eight million, two hundred eighty thousand, four hundred thirty-eight".