630191040 has 112 divisors (see below), whose sum is σ = 2043574272. Its totient is φ = 164463616.

The previous prime is 630191039. The next prime is 630191059. The reversal of 630191040 is 40191036.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 630191040.

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, 38137 + ... + 52103.

Almost surely, 2^630191040 is an apocalyptic number.

630191040 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 630191040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1021787136).

630191040 is an abundant number, since it is smaller than the sum of its proper divisors (1413383232).

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

630191040 is a wasteful number, since it uses less digits than its factorization.

630191040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14034 (or 14024 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 630191040 is about 25103.6061154568. The cubic root of 630191040 is about 857.3485309615.

The spelling of 630191040 in words is "six hundred thirty million, one hundred ninety-one thousand, forty".