1047578228720 has 40 divisors (see below), whose sum is σ = 2444606957760. Its totient is φ = 417485041920.

The previous prime is 1047578228689. The next prime is 1047578228761. The reversal of 1047578228720 is 278228757401.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24138335 + ... + 24181694.

It is an arithmetic number, because the mean of its divisors is an integer number (61115173944).

Almost surely, 2^{1047578228720} is an apocalyptic number.

1047578228720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1047578228720 is an abundant number, since it is smaller than the sum of its proper divisors (1397028729040).

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

1047578228720 is a wasteful number, since it uses less digits than its factorization.

1047578228720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48320313 (or 48320307 counting only the distinct ones).

The product of its (nonzero) digits is 3512320, while the sum is 53.

The spelling of 1047578228720 in words is "one trillion, forty-seven billion, five hundred seventy-eight million, two hundred twenty-eight thousand, seven hundred twenty".