1230456840 has 32 divisors (see below), whose sum is σ = 3691370880. Its totient is φ = 328121792.

The previous prime is 1230456827. The next prime is 1230456881. The reversal of 1230456840 is 486540321.

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 7 ways as a sum of consecutive naturals, for example, 5126784 + ... + 5127023.

It is an arithmetic number, because the mean of its divisors is an integer number (115355340).

Almost surely, 2^1230456840 is an apocalyptic number.

1230456840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1230456840 is an abundant number, since it is smaller than the sum of its proper divisors (2460914040).

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

1230456840 is a wasteful number, since it uses less digits than its factorization.

1230456840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10253821 (or 10253817 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 33.

The square root of 1230456840 is about 35077.8682362540. The cubic root of 1230456840 is about 1071.5739029272.

The spelling of 1230456840 in words is "one billion, two hundred thirty million, four hundred fifty-six thousand, eight hundred forty".