1090047720 has 64 divisors (see below), whose sum is σ = 3299123520. Its totient is φ = 288103424.

The previous prime is 1090047719. The next prime is 1090047743. The reversal of 1090047720 is 277400901.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26634 + ... + 53753.

It is an arithmetic number, because the mean of its divisors is an integer number (51548805).

Almost surely, 2^1090047720 is an apocalyptic number.

1090047720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1090047720 is an abundant number, since it is smaller than the sum of its proper divisors (2209075800).

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

1090047720 is a wasteful number, since it uses less digits than its factorization.

1090047720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80514 (or 80510 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 30.

The square root of 1090047720 is about 33015.8707290903. The cubic root of 1090047720 is about 1029.1574849085.

The spelling of 1090047720 in words is "one billion, ninety million, forty-seven thousand, seven hundred twenty".