452649990 has 128 divisors (see below), whose sum is σ = 1258467840. Its totient is φ = 103200768.

The previous prime is 452649979. The next prime is 452649991. The reversal of 452649990 is 99946254.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (452649991) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 443701 + ... + 444719.

It is an arithmetic number, because the mean of its divisors is an integer number (9831780).

Almost surely, 2^452649990 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 452649990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (629233920).

452649990 is an abundant number, since it is smaller than the sum of its proper divisors (805817850).

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

452649990 is a wasteful number, since it uses less digits than its factorization.

452649990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1126.

The product of its (nonzero) digits is 699840, while the sum is 48.

The square root of 452649990 is about 21275.5726127406. The cubic root of 452649990 is about 767.8107206342.

The spelling of 452649990 in words is "four hundred fifty-two million, six hundred forty-nine thousand, nine hundred ninety".