631484028 has 54 divisors (see below), whose sum is σ = 1825440344. Its totient is φ = 180310032.

The previous prime is 631483997. The next prime is 631484033. The reversal of 631484028 is 820484136.

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

It is a junction number, because it is equal to n+sod(n) for n = 631483983 and 631484001.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 398125 + ... + 399707.

Almost surely, 2^631484028 is an apocalyptic number.

It is an amenable number.

631484028 is an abundant number, since it is smaller than the sum of its proper divisors (1193956316).

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

631484028 is a wasteful number, since it uses less digits than its factorization.

631484028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3183 (or 1595 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 36.

The square root of 631484028 is about 25129.3459524915. The cubic root of 631484028 is about 857.9344824211.

It can be divided in two parts, 63148 and 4028, that added together give a palindrome (67176).

The spelling of 631484028 in words is "six hundred thirty-one million, four hundred eighty-four thousand, twenty-eight".