1491028224 has 144 divisors (see below), whose sum is σ = 4621663872. Its totient is φ = 417890304.

The previous prime is 1491028223. The next prime is 1491028229. The reversal of 1491028224 is 4228201941.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1491028223) 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 15 ways as a sum of consecutive naturals, for example, 282312 + ... + 287544.

It is an arithmetic number, because the mean of its divisors is an integer number (32094888).

Almost surely, 2^1491028224 is an apocalyptic number.

1491028224 is a gapful number since it is divisible by the number (14) 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 1491028224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2310831936).

1491028224 is an abundant number, since it is smaller than the sum of its proper divisors (3130635648).

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

1491028224 is an equidigital number, since it uses as much as digits as its factorization.

1491028224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5312 (or 5298 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 1491028224 is about 38613.8346192139. The cubic root of 1491028224 is about 1142.4274283523.

It can be divided in two parts, 14910 and 28224, that added together give a palindrome (43134).

The spelling of 1491028224 in words is "one billion, four hundred ninety-one million, twenty-eight thousand, two hundred twenty-four".