1516272720 has 40 divisors (see below), whose sum is σ = 4700446176. Its totient is φ = 404339328.

The previous prime is 1516272689. The next prime is 1516272727. The reversal of 1516272720 is 272726151.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×1516272720² = 4598165922832396800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1516272727) 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, 3158662 + ... + 3159141.

Almost surely, 2^1516272720 is an apocalyptic number.

1516272720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1516272720 is an abundant number, since it is smaller than the sum of its proper divisors (3184173456).

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

1516272720 is a wasteful number, since it uses less digits than its factorization.

1516272720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6317819 (or 6317813 counting only the distinct ones).

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

The square root of 1516272720 is about 38939.3466817306. The cubic root of 1516272720 is about 1148.8388329931.

Adding to 1516272720 its reverse (272726151), we get a palindrome (1788998871).

The spelling of 1516272720 in words is "one billion, five hundred sixteen million, two hundred seventy-two thousand, seven hundred twenty".