1967665028 has 12 divisors (see below), whose sum is σ = 3935330112. Its totient is φ = 843285000.

The previous prime is 1967665009. The next prime is 1967665039. The reversal of 1967665028 is 8205667691.

1967665028 is an admirable 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, 35136848 + ... + 35136903.

It is an arithmetic number, because the mean of its divisors is an integer number (327944176).

Almost surely, 2^1967665028 is an apocalyptic number.

It is an amenable number.

1967665028 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1967665028 is a wasteful number, since it uses less digits than its factorization.

1967665028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70273762 (or 70273760 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 50.

The square root of 1967665028 is about 44358.3704389600. The cubic root of 1967665028 is about 1253.0942070265.

The spelling of 1967665028 in words is "one billion, nine hundred sixty-seven million, six hundred sixty-five thousand, twenty-eight".