196697428 has 12 divisors (see below), whose sum is σ = 349863892. Its totient is φ = 96736320.

The previous prime is 196697419. The next prime is 196697483. The reversal of 196697428 is 824796691.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 11410884 + 185286544 = 3378^2 + 13612^2 .

It is a congruent 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, 402825 + ... + 403312.

Almost surely, 2^196697428 is an apocalyptic number.

It is an amenable number.

196697428 is a deficient number, since it is larger than the sum of its proper divisors (153166464).

196697428 is a wasteful number, since it uses less digits than its factorization.

196697428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 806202 (or 806200 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 52.

The square root of 196697428 is about 14024.8860244923. The cubic root of 196697428 is about 581.5667390273.

The spelling of 196697428 in words is "one hundred ninety-six million, six hundred ninety-seven thousand, four hundred twenty-eight".