649482240 has 312 divisors, whose sum is σ = 2342494944. Its totient is φ = 152371200.

The previous prime is 649482233. The next prime is 649482283. The reversal of 649482240 is 42284946.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20951025 + ... + 20951055.

Almost surely, 2^649482240 is an apocalyptic number.

649482240 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 649482240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1171247472).

649482240 is an abundant number, since it is smaller than the sum of its proper divisors (1693012704).

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

649482240 is a wasteful number, since it uses less digits than its factorization.

649482240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105 (or 52 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 39.

The square root of 649482240 is about 25484.9414360716. The cubic root of 649482240 is about 866.0090422138.

The spelling of 649482240 in words is "six hundred forty-nine million, four hundred eighty-two thousand, two hundred forty".