1047424820 has 72 divisors (see below), whose sum is σ = 2390653440. Its totient is φ = 385307520.

The previous prime is 1047424811. The next prime is 1047424841. The reversal of 1047424820 is 284247401.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1456421 + ... + 1457139.

It is an arithmetic number, because the mean of its divisors is an integer number (33203520).

Almost surely, 2^1047424820 is an apocalyptic number.

1047424820 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 1047424820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1195326720).

1047424820 is an abundant number, since it is smaller than the sum of its proper divisors (1343228620).

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

1047424820 is a wasteful number, since it uses less digits than its factorization.

1047424820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1185 (or 1170 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 32.

The square root of 1047424820 is about 32363.9432084534. The cubic root of 1047424820 is about 1015.5647548264.

The spelling of 1047424820 in words is "one billion, forty-seven million, four hundred twenty-four thousand, eight hundred twenty".