2649928 has 8 divisors (see below), whose sum is σ = 4968630. Its totient is φ = 1324960.

The previous prime is 2649923. The next prime is 2649929. The reversal of 2649928 is 8299462.

It can be written as a sum of positive squares in only one way, i.e., 2630884 + 19044 = 1622^2 + 138^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (2649923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165613 + ... + 165628.

2^2649928 is an apocalyptic number.

It is an amenable number.

2649928 is a deficient number, since it is larger than the sum of its proper divisors (2318702).

2649928 is a wasteful number, since it uses less digits than its factorization.

2649928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331247 (or 331243 counting only the distinct ones).

The product of its digits is 62208, while the sum is 40.

The square root of 2649928 is about 1627.8599448356. The cubic root of 2649928 is about 138.3814970754.

It can be divided in two parts, 264992 and 8, that multiplied together give a square (2119936 = 1456²).

The spelling of 2649928 in words is "two million, six hundred forty-nine thousand, nine hundred twenty-eight".