1028253432 has 64 divisors (see below), whose sum is σ = 2788279200. Its totient is φ = 314716160.

The previous prime is 1028253379. The next prime is 1028253461. The reversal of 1028253432 is 2343528201.

It is a self number, because there is not a number n which added to its sum of digits gives 1028253432.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14007 + ... + 47462.

Almost surely, 2^1028253432 is an apocalyptic number.

1028253432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1028253432 is an abundant number, since it is smaller than the sum of its proper divisors (1760025768).

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

1028253432 is a wasteful number, since it uses less digits than its factorization.

1028253432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61536 (or 61532 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 1028253432 is about 32066.3910036661. The cubic root of 1028253432 is about 1009.3304820081.

The spelling of 1028253432 in words is "one billion, twenty-eight million, two hundred fifty-three thousand, four hundred thirty-two".