1522720 has 48 divisors (see below), whose sum is σ = 3725568. Its totient is φ = 587520.

The previous prime is 1522711. The next prime is 1522727. The reversal of 1522720 is 272251.

It is not an unprimeable number, because it can be changed into a prime (1522727) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4807 + ... + 5113.

It is an arithmetic number, because the mean of its divisors is an integer number (77616).

2^1522720 is an apocalyptic number.

1522720 is a gapful number since it is divisible by the number (10) 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 1522720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1862784).

1522720 is an abundant number, since it is smaller than the sum of its proper divisors (2202848).

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

1522720 is a wasteful number, since it uses less digits than its factorization.

1522720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353 (or 345 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 19.

The square root of 1522720 is about 1233.9854132039. The cubic root of 1522720 is about 115.0464840437.

Adding to 1522720 its reverse (272251), we get a palindrome (1794971).

The spelling of 1522720 in words is "one million, five hundred twenty-two thousand, seven hundred twenty".