1230655128 has 32 divisors (see below), whose sum is σ = 3078470400. Its totient is φ = 409974048.

The previous prime is 1230655123. The next prime is 1230655133. The reversal of 1230655128 is 8215560321.

It is an interprime number because it is at equal distance from previous prime (1230655123) and next prime (1230655133).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1230655123) 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, 28413 + ... + 57171.

It is an arithmetic number, because the mean of its divisors is an integer number (96202200).

Almost surely, 2^1230655128 is an apocalyptic number.

It is an amenable number.

1230655128 is an abundant number, since it is smaller than the sum of its proper divisors (1847815272).

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

1230655128 is a wasteful number, since it uses less digits than its factorization.

1230655128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30551 (or 30547 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 33.

The square root of 1230655128 is about 35080.6945199208. The cubic root of 1230655128 is about 1071.6314611789.

The spelling of 1230655128 in words is "one billion, two hundred thirty million, six hundred fifty-five thousand, one hundred twenty-eight".