1011204440 has 32 divisors (see below), whose sum is σ = 2280124080. Its totient is φ = 403608192.

The previous prime is 1011204433. The next prime is 1011204449. The reversal of 1011204440 is 444021101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011204449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8387 + ... + 45746.

Almost surely, 2^1011204440 is an apocalyptic number.

1011204440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1011204440 is an abundant number, since it is smaller than the sum of its proper divisors (1268919640).

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

1011204440 is a wasteful number, since it uses less digits than its factorization.

1011204440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54611 (or 54607 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 1011204440 is about 31799.4408755877. The cubic root of 1011204440 is about 1003.7209506865.

Adding to 1011204440 its reverse (444021101), we get a palindrome (1455225541).

The spelling of 1011204440 in words is "one billion, eleven million, two hundred four thousand, four hundred forty".