630783072 has 144 divisors (see below), whose sum is σ = 1878947280. Its totient is φ = 205867008.

The previous prime is 630782969. The next prime is 630783103. The reversal of 630783072 is 270387036.

It is a tau number, because it is divible by the number of its divisors (144).

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

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4604188 + ... + 4604324.

It is an arithmetic number, because the mean of its divisors is an integer number (13048245).

Almost surely, 2^630783072 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 630783072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (939473640).

630783072 is an abundant number, since it is smaller than the sum of its proper divisors (1248164208).

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

630783072 is a wasteful number, since it uses less digits than its factorization.

630783072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302 (or 215 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 36.

The square root of 630783072 is about 25115.3951193287. The cubic root of 630783072 is about 857.6169251830.

The spelling of 630783072 in words is "six hundred thirty million, seven hundred eighty-three thousand, seventy-two".