1028542464 has 78 divisors (see below), whose sum is σ = 2971088666. Its totient is φ = 342835200.

The previous prime is 1028542453. The next prime is 1028542519. The reversal of 1028542464 is 4642458201.

1028542464 is a `hidden beast` number, since 102 + 8 + 542 + 4 + 6 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1003622400 + 24920064 = 31680^2 + 4992^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 22914 + ... + 50814.

Almost surely, 2^1028542464 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 1028542464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1485544333).

1028542464 is an abundant number, since it is smaller than the sum of its proper divisors (1942546202).

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

1028542464 is an equidigital number, since it uses as much as digits as its factorization.

1028542464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27931 (or 27906 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 36.

The square root of 1028542464 is about 32070.8974617175. The cubic root of 1028542464 is about 1009.4250441297.

The spelling of 1028542464 in words is "one billion, twenty-eight million, five hundred forty-two thousand, four hundred sixty-four".