132720464 has 20 divisors (see below), whose sum is σ = 259695060. Its totient is φ = 65702400.

The previous prime is 132720439. The next prime is 132720473. The reversal of 132720464 is 464027231.

It can be written as a sum of positive squares in 2 ways, for example, as 67240000 + 65480464 = 8200^2 + 8092^2 .

It is a super-2 number, since 2×132720464² = 35229443128750592, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39449 + ... + 42680.

It is an arithmetic number, because the mean of its divisors is an integer number (12984753).

Almost surely, 2^132720464 is an apocalyptic number.

It is an amenable number.

132720464 is a deficient number, since it is larger than the sum of its proper divisors (126974596).

132720464 is a wasteful number, since it uses less digits than its factorization.

132720464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82238 (or 82232 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 29.

The square root of 132720464 is about 11520.4367972747. The cubic root of 132720464 is about 510.0890066364.

Adding to 132720464 its reverse (464027231), we get a palindrome (596747695).

The spelling of 132720464 in words is "one hundred thirty-two million, seven hundred twenty thousand, four hundred sixty-four".