1047036780 has 120 divisors (see below), whose sum is σ = 3390710400. Its totient is φ = 270190080.

The previous prime is 1047036779. The next prime is 1047036827. The reversal of 1047036780 is 876307401.

1047036780 is digitally balanced in base 2 and base 6, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 39796 + ... + 60644.

It is an arithmetic number, because the mean of its divisors is an integer number (28255920).

Almost surely, 2^1047036780 is an apocalyptic number.

1047036780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1047036780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1695355200).

1047036780 is an abundant number, since it is smaller than the sum of its proper divisors (2343673620).

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

1047036780 is a wasteful number, since it uses less digits than its factorization.

1047036780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20901 (or 20890 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The square root of 1047036780 is about 32357.9477099522. The cubic root of 1047036780 is about 1015.4393270742.

The spelling of 1047036780 in words is "one billion, forty-seven million, thirty-six thousand, seven hundred eighty".