1113066720 has 72 divisors (see below), whose sum is σ = 3798345096. Its totient is φ = 296817408.

The previous prime is 1113066709. The next prime is 1113066733. The reversal of 1113066720 is 276603111.

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 385042 + ... + 387921.

It is an arithmetic number, because the mean of its divisors is an integer number (52754793).

Almost surely, 2^1113066720 is an apocalyptic number.

1113066720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1113066720 is an abundant number, since it is smaller than the sum of its proper divisors (2685278376).

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

1113066720 is a wasteful number, since it uses less digits than its factorization.

1113066720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 772984 (or 772973 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 1113066720 is about 33362.6545706423. The cubic root of 1113066720 is about 1036.3514656507.

Adding to 1113066720 its reverse (276603111), we get a palindrome (1389669831).

The spelling of 1113066720 in words is "one billion, one hundred thirteen million, sixty-six thousand, seven hundred twenty".