30649656 has 16 divisors (see below), whose sum is σ = 76624200. Its totient is φ = 10216544.

The previous prime is 30649643. The next prime is 30649667. The reversal of 30649656 is 65694603.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 638511 + ... + 638558.

Almost surely, 2^30649656 is an apocalyptic number.

It is an amenable number.

30649656 is an abundant number, since it is smaller than the sum of its proper divisors (45974544).

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

30649656 is a wasteful number, since it uses less digits than its factorization.

30649656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1277078 (or 1277074 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 39.

The square root of 30649656 is about 5536.2131461858. The cubic root of 30649656 is about 312.9501769921.

It can be divided in two parts, 3064 and 9656, that added together give a triangular number (12720 = T₁₅₉).

The spelling of 30649656 in words is "thirty million, six hundred forty-nine thousand, six hundred fifty-six".