451269072 has 60 divisors (see below), whose sum is σ = 1266516160. Its totient is φ = 149995584.

The previous prime is 451269061. The next prime is 451269079. The reversal of 451269072 is 270962154.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (451269079) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 48579 + ... + 57117.

Almost surely, 2^451269072 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 451269072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (633258080).

451269072 is an abundant number, since it is smaller than the sum of its proper divisors (815247088).

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

451269072 is a wasteful number, since it uses less digits than its factorization.

451269072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8920 (or 8911 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 451269072 is about 21243.0946898045. The cubic root of 451269072 is about 767.0291280010.

The spelling of 451269072 in words is "four hundred fifty-one million, two hundred sixty-nine thousand, seventy-two".