649293852 has 48 divisors (see below), whose sum is σ = 1620071712. Its totient is φ = 201676800.

The previous prime is 649293833. The next prime is 649293857. The reversal of 649293852 is 258392946.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (649293857) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4848 + ... + 36360.

It is an arithmetic number, because the mean of its divisors is an integer number (33751494).

Almost surely, 2^649293852 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 649293852, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (810035856).

649293852 is an abundant number, since it is smaller than the sum of its proper divisors (970777860).

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

649293852 is a wasteful number, since it uses less digits than its factorization.

649293852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31638 (or 31636 counting only the distinct ones).

The product of its digits is 933120, while the sum is 48.

The square root of 649293852 is about 25481.2451030165. The cubic root of 649293852 is about 865.9253029531.

The spelling of 649293852 in words is "six hundred forty-nine million, two hundred ninety-three thousand, eight hundred fifty-two".