649241328 has 40 divisors (see below), whose sum is σ = 1735045200. Its totient is φ = 208950784.

The previous prime is 649241321. The next prime is 649241353. The reversal of 649241328 is 823142946.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (649241321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 231813 + ... + 234596.

It is an arithmetic number, because the mean of its divisors is an integer number (43376130).

Almost surely, 2^649241328 is an apocalyptic number.

It is an amenable number.

649241328 is an abundant number, since it is smaller than the sum of its proper divisors (1085803872).

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

649241328 is a wasteful number, since it uses less digits than its factorization.

649241328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 466449 (or 466443 counting only the distinct ones).

The product of its digits is 82944, while the sum is 39.

The square root of 649241328 is about 25480.2144417978. The cubic root of 649241328 is about 865.9019529260.

The spelling of 649241328 in words is "six hundred forty-nine million, two hundred forty-one thousand, three hundred twenty-eight".