196669728 has 48 divisors (see below), whose sum is σ = 573622560. Its totient is φ = 65556288.

The previous prime is 196669717. The next prime is 196669777. The reversal of 196669728 is 827966691.

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

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112950 + ... + 114677.

It is an arithmetic number, because the mean of its divisors is an integer number (11950470).

Almost surely, 2^196669728 is an apocalyptic number.

196669728 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

196669728 is an abundant number, since it is smaller than the sum of its proper divisors (376952832).

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

196669728 is a wasteful number, since it uses less digits than its factorization.

196669728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227646 (or 227632 counting only the distinct ones).

The product of its digits is 1959552, while the sum is 54.

The square root of 196669728 is about 14023.8984594156. The cubic root of 196669728 is about 581.5394379502.

The spelling of 196669728 in words is "one hundred ninety-six million, six hundred sixty-nine thousand, seven hundred twenty-eight".