1648072 has 8 divisors (see below), whose sum is σ = 3090150. Its totient is φ = 824032.

The previous prime is 1648069. The next prime is 1648081. The reversal of 1648072 is 2708461.

It can be written as a sum of positive squares in only one way, i.e., 1522756 + 125316 = 1234^2 + 354^2 .

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

It is a super-2 number, since 2×1648072² = 5432282634368, which contains 22 as substring.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 1648072.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102997 + ... + 103012.

2^1648072 is an apocalyptic number.

It is an amenable number.

1648072 is a deficient number, since it is larger than the sum of its proper divisors (1442078).

1648072 is a wasteful number, since it uses less digits than its factorization.

1648072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206015 (or 206011 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 1648072 is about 1283.7725655271. The cubic root of 1648072 is about 118.1205318243.

The spelling of 1648072 in words is "one million, six hundred forty-eight thousand, seventy-two".