1662216288 has 48 divisors (see below), whose sum is σ = 4456166400. Its totient is φ = 542281856.

The previous prime is 1662216253. The next prime is 1662216307. The reversal of 1662216288 is 8826122661.

It is a tau number, because it is divible by the number of its divisors (48).

It is a nude number because it is divisible by every one of its digits.

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, 179688 + ... + 188711.

It is an arithmetic number, because the mean of its divisors is an integer number (92836800).

Almost surely, 2^1662216288 is an apocalyptic number.

It is an amenable number.

1662216288 is an abundant number, since it is smaller than the sum of its proper divisors (2793950112).

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

1662216288 is a wasteful number, since it uses less digits than its factorization.

1662216288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368459 (or 368451 counting only the distinct ones).

The product of its digits is 110592, while the sum is 42.

The square root of 1662216288 is about 40770.2868275415. The cubic root of 1662216288 is about 1184.5748593304.

The spelling of 1662216288 in words is "one billion, six hundred sixty-two million, two hundred sixteen thousand, two hundred eighty-eight".