649027028 has 24 divisors (see below), whose sum is σ = 1238657280. Its totient is φ = 295757280.

The previous prime is 649027009. The next prime is 649027073. The reversal of 649027028 is 820720946.

It is a junction number, because it is equal to n+sod(n) for n = 649026982 and 649027000.

It is a congruent number.

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, 74888 + ... + 83103.

It is an arithmetic number, because the mean of its divisors is an integer number (51610720).

Almost surely, 2^649027028 is an apocalyptic number.

It is an amenable number.

649027028 is a deficient number, since it is larger than the sum of its proper divisors (589630252).

649027028 is a wasteful number, since it uses less digits than its factorization.

649027028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158087 (or 158085 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 649027028 is about 25476.0088710928. The cubic root of 649027028 is about 865.8066708376.

The spelling of 649027028 in words is "six hundred forty-nine million, twenty-seven thousand, twenty-eight".