196420728 has 32 divisors (see below), whose sum is σ = 561202560. Its totient is φ = 56120160.

The previous prime is 196420717. The next prime is 196420729. The reversal of 196420728 is 827024691.

196420728 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×196420728² = 77162204776099968, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (196420729) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 584418 + ... + 584753.

It is an arithmetic number, because the mean of its divisors is an integer number (17537580).

Almost surely, 2^196420728 is an apocalyptic number.

It is an amenable number.

196420728 is an abundant number, since it is smaller than the sum of its proper divisors (364781832).

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

196420728 is a wasteful number, since it uses less digits than its factorization.

196420728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1169187 (or 1169183 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 196420728 is about 14015.0179450474. The cubic root of 196420728 is about 581.2939087653.

The spelling of 196420728 in words is "one hundred ninety-six million, four hundred twenty thousand, seven hundred twenty-eight".