132723840 has 64 divisors (see below), whose sum is σ = 423063360. Its totient is φ = 35392512.

The previous prime is 132723827. The next prime is 132723841. The reversal of 132723840 is 48327231.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 132723798 and 132723807.

It is not an unprimeable number, because it can be changed into a prime (132723841) 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, 32644 + ... + 36483.

It is an arithmetic number, because the mean of its divisors is an integer number (6610365).

Almost surely, 2^132723840 is an apocalyptic number.

132723840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

132723840 is an abundant number, since it is smaller than the sum of its proper divisors (290339520).

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

132723840 is an equidigital number, since it uses as much as digits as its factorization.

132723840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69149 (or 69137 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 132723840 is about 11520.5833185651. The cubic root of 132723840 is about 510.0933316310.

The spelling of 132723840 in words is "one hundred thirty-two million, seven hundred twenty-three thousand, eight hundred forty".