1028475400 has 48 divisors (see below), whose sum is σ = 2394908100. Its totient is φ = 410753280.

The previous prime is 1028475397. The next prime is 1028475403. The reversal of 1028475400 is 45748201.

It is an interprime number because it is at equal distance from previous prime (1028475397) and next prime (1028475403).

It can be written as a sum of positive squares in 6 ways, for example, as 287438116 + 741037284 = 16954^2 + 27222^2 .

It is not an unprimeable number, because it can be changed into a prime (1028475403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 138174 + ... + 145426.

Almost surely, 2^1028475400 is an apocalyptic number.

1028475400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1028475400 is an abundant number, since it is smaller than the sum of its proper divisors (1366432700).

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

1028475400 is a wasteful number, since it uses less digits than its factorization.

1028475400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7978 (or 7969 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 31.

The square root of 1028475400 is about 32069.8518861563. The cubic root of 1028475400 is about 1009.4031044902.

The spelling of 1028475400 in words is "one billion, twenty-eight million, four hundred seventy-five thousand, four hundred".