1228630405000 has 40 divisors (see below), whose sum is σ = 2878681050630. Its totient is φ = 491452160000.

The previous prime is 1228630404997. The next prime is 1228630405033. The reversal of 1228630405000 is 5040368221.

It can be written as a sum of positive squares in 5 ways, for example, as 34160650276 + 1194469754724 = 184826^2 + 1092918^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 122858041 + ... + 122868040.

Almost surely, 2^{1228630405000} is an apocalyptic number.

1228630405000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1228630405000 is an abundant number, since it is smaller than the sum of its proper divisors (1650050645630).

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

1228630405000 is an equidigital number, since it uses as much as digits as its factorization.

1228630405000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245726107 (or 245726088 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 31.

The spelling of 1228630405000 in words is "one trillion, two hundred twenty-eight billion, six hundred thirty million, four hundred five thousand".