1028480661 has 24 divisors (see below), whose sum is σ = 1602147456. Its totient is φ = 632005920.

The previous prime is 1028480633. The next prime is 1028480681. The reversal of 1028480661 is 1660848201.

It is not a de Polignac number, because 1028480661 - 2⁶ = 1028480597 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1028480681) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 81016 + ... + 92846.

It is an arithmetic number, because the mean of its divisors is an integer number (66756144).

Almost surely, 2^1028480661 is an apocalyptic number.

It is an amenable number.

1028480661 is a deficient number, since it is larger than the sum of its proper divisors (573666795).

1028480661 is a wasteful number, since it uses less digits than its factorization.

1028480661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12593 (or 12590 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The square root of 1028480661 is about 32069.9339101283. The cubic root of 1028480661 is about 1009.4048256335.

The spelling of 1028480661 in words is "one billion, twenty-eight million, four hundred eighty thousand, six hundred sixty-one".