451866460 has 48 divisors (see below), whose sum is σ = 1026152064. Its totient is φ = 166489088.

The previous prime is 451866451. The next prime is 451866473. The reversal of 451866460 is 64668154.

It is a happy number.

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, 1842 + ... + 30118.

It is an arithmetic number, because the mean of its divisors is an integer number (21378168).

Almost surely, 2^451866460 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 451866460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (513076032).

451866460 is an abundant number, since it is smaller than the sum of its proper divisors (574285604).

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

451866460 is a wasteful number, since it uses less digits than its factorization.

451866460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28350 (or 28348 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 40.

The square root of 451866460 is about 21257.1507968495. The cubic root of 451866460 is about 767.3674420135.

The spelling of 451866460 in words is "four hundred fifty-one million, eight hundred sixty-six thousand, four hundred sixty".