1128245680 has 40 divisors (see below), whose sum is σ = 2737226592. Its totient is φ = 431675904.

The previous prime is 1128245659. The next prime is 1128245683. The reversal of 1128245680 is 865428211.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-3 number, since 3×1128245680³ (a number of 28 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1128245683) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 304749 + ... + 308428.

Almost surely, 2^1128245680 is an apocalyptic number.

1128245680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1128245680 is an abundant number, since it is smaller than the sum of its proper divisors (1608980912).

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

1128245680 is a wasteful number, since it uses less digits than its factorization.

1128245680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 613213 (or 613207 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 37.

The square root of 1128245680 is about 33589.3685561369. The cubic root of 1128245680 is about 1041.0411417855.

The spelling of 1128245680 in words is "one billion, one hundred twenty-eight million, two hundred forty-five thousand, six hundred eighty".