451261746 has 96 divisors (see below), whose sum is σ = 1104405120. Its totient is φ = 135761184.

The previous prime is 451261739. The next prime is 451261747. The reversal of 451261746 is 647162154.

It is a self number, because there is not a number n which added to its sum of digits gives 451261746.

It is not an unprimeable number, because it can be changed into a prime (451261747) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4381131 + ... + 4381233.

It is an arithmetic number, because the mean of its divisors is an integer number (11504220).

Almost surely, 2^451261746 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 451261746, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (552202560).

451261746 is an abundant number, since it is smaller than the sum of its proper divisors (653143374).

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

451261746 is a wasteful number, since it uses less digits than its factorization.

451261746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285 (or 200 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 451261746 is about 21242.9222566011. The cubic root of 451261746 is about 767.0249772728.

The spelling of 451261746 in words is "four hundred fifty-one million, two hundred sixty-one thousand, seven hundred forty-six".