450561630 has 32 divisors (see below), whose sum is σ = 1138262400. Its totient is φ = 113825952.

The previous prime is 450561607. The next prime is 450561641. The reversal of 450561630 is 36165054.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an alternating number because its digits alternate between even and odd.

It is a Curzon 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, 394660 + ... + 395799.

It is an arithmetic number, because the mean of its divisors is an integer number (35570700).

Almost surely, 2^450561630 is an apocalyptic number.

450561630 is an abundant number, since it is smaller than the sum of its proper divisors (687700770).

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

450561630 is a wasteful number, since it uses less digits than its factorization.

450561630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 790488.

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 450561630 is about 21226.4370538251. The cubic root of 450561630 is about 766.6281016098.

The spelling of 450561630 in words is "four hundred fifty million, five hundred sixty-one thousand, six hundred thirty".