1522716720 has 160 divisors (see below), whose sum is σ = 5407891968. Its totient is φ = 347203584.

The previous prime is 1522716661. The next prime is 1522716721. The reversal of 1522716720 is 276172251.

It is not an unprimeable number, because it can be changed into a prime (1522716721) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 918132 + ... + 919788.

Almost surely, 2^1522716720 is an apocalyptic number.

1522716720 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 1522716720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2703945984).

1522716720 is an abundant number, since it is smaller than the sum of its proper divisors (3885175248).

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

1522716720 is a wasteful number, since it uses less digits than its factorization.

1522716720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2227 (or 2221 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 33.

The square root of 1522716720 is about 39022.0030239351. The cubic root of 1522716720 is about 1150.4640143876.

Adding to 1522716720 its reverse (276172251), we get a palindrome (1798888971).

The spelling of 1522716720 in words is "one billion, five hundred twenty-two million, seven hundred sixteen thousand, seven hundred twenty".