451281132 has 36 divisors (see below), whose sum is σ = 1182990536. Its totient is φ = 150426720.

The previous prime is 451281107. The next prime is 451281143. The reversal of 451281132 is 231182154.

451281132 is a `hidden beast` number, since 451 + 2 + 81 + 132 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 451281096 and 451281105.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 231169 + ... + 233112.

Almost surely, 2^451281132 is an apocalyptic number.

It is an amenable number.

451281132 is an abundant number, since it is smaller than the sum of its proper divisors (731709404).

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

451281132 is a wasteful number, since it uses less digits than its factorization.

451281132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 464300 (or 464286 counting only the distinct ones).

The product of its digits is 1920, while the sum is 27.

The square root of 451281132 is about 21243.3785448549. The cubic root of 451281132 is about 767.0359607972.

The spelling of 451281132 in words is "four hundred fifty-one million, two hundred eighty-one thousand, one hundred thirty-two".