1230277728 has 96 divisors (see below), whose sum is σ = 3388525056. Its totient is φ = 390094848.

The previous prime is 1230277717. The next prime is 1230277733. The reversal of 1230277728 is 8277720321.

It is a tau number, because it is divible by the number of its divisors (96).

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 15 ways as a sum of consecutive naturals, for example, 424701 + ... + 427587.

It is an arithmetic number, because the mean of its divisors is an integer number (35297136).

Almost surely, 2^1230277728 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 1230277728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1694262528).

1230277728 is an abundant number, since it is smaller than the sum of its proper divisors (2158247328).

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

1230277728 is a wasteful number, since it uses less digits than its factorization.

1230277728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3116 (or 3108 counting only the distinct ones).

The product of its (nonzero) digits is 65856, while the sum is 39.

The square root of 1230277728 is about 35075.3150805520. The cubic root of 1230277728 is about 1071.5219056927.

The spelling of 1230277728 in words is "one billion, two hundred thirty million, two hundred seventy-seven thousand, seven hundred twenty-eight".