649394152 has 32 divisors (see below), whose sum is σ = 1406445120. Its totient is φ = 277815040.

The previous prime is 649394147. The next prime is 649394171. The reversal of 649394152 is 251493946.

It is a junction number, because it is equal to n+sod(n) for n = 649394099 and 649394108.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 215548 + ... + 218539.

It is an arithmetic number, because the mean of its divisors is an integer number (43951410).

Almost surely, 2^649394152 is an apocalyptic number.

It is an amenable number.

649394152 is an abundant number, since it is smaller than the sum of its proper divisors (757050968).

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

649394152 is a wasteful number, since it uses less digits than its factorization.

649394152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434121 (or 434117 counting only the distinct ones).

The product of its digits is 233280, while the sum is 43.

The square root of 649394152 is about 25483.2131412034. The cubic root of 649394152 is about 865.9698887421.

The spelling of 649394152 in words is "six hundred forty-nine million, three hundred ninety-four thousand, one hundred fifty-two".