630155260 has 24 divisors (see below), whose sum is σ = 1512372960. Its totient is φ = 216053184.

The previous prime is 630155221. The next prime is 630155263. The reversal of 630155260 is 62551036.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (630155263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2250415 + ... + 2250694.

It is an arithmetic number, because the mean of its divisors is an integer number (63015540).

Almost surely, 2^630155260 is an apocalyptic number.

It is an amenable number.

630155260 is an abundant number, since it is smaller than the sum of its proper divisors (882217700).

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

630155260 is a wasteful number, since it uses less digits than its factorization.

630155260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4501125 (or 4501123 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 630155260 is about 25102.8934587230. The cubic root of 630155260 is about 857.3323049237.

The spelling of 630155260 in words is "six hundred thirty million, one hundred fifty-five thousand, two hundred sixty".