11072840 has 16 divisors (see below), whose sum is σ = 24913980. Its totient is φ = 4429120.

The previous prime is 11072819. The next prime is 11072849. The reversal of 11072840 is 4827011.

It can be written as a sum of positive squares in 2 ways, for example, as 10329796 + 743044 = 3214^2 + 862^2 .

It is not an unprimeable number, because it can be changed into a prime (11072849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138371 + ... + 138450.

Almost surely, 2^11072840 is an apocalyptic number.

11072840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11072840 is an abundant number, since it is smaller than the sum of its proper divisors (13841140).

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

11072840 is a wasteful number, since it uses less digits than its factorization.

11072840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276832 (or 276828 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 23.

The square root of 11072840 is about 3327.5877148469. The cubic root of 11072840 is about 222.8878225506.

Adding to 11072840 its reverse (4827011), we get a palindrome (15899851).

The spelling of 11072840 in words is "eleven million, seventy-two thousand, eight hundred forty".