132451220 has 48 divisors (see below), whose sum is σ = 313238016. Its totient is φ = 46608000.

The previous prime is 132451219. The next prime is 132451237. The reversal of 132451220 is 22154231.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 132451192 and 132451201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2891 + ... + 16530.

It is an arithmetic number, because the mean of its divisors is an integer number (6525792).

Almost surely, 2^132451220 is an apocalyptic number.

132451220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

132451220 is an abundant number, since it is smaller than the sum of its proper divisors (180786796).

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

132451220 is a wasteful number, since it uses less digits than its factorization.

132451220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19472 (or 19470 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 132451220 is about 11508.7453703694. The cubic root of 132451220 is about 509.7438416284.

The spelling of 132451220 in words is "one hundred thirty-two million, four hundred fifty-one thousand, two hundred twenty".