196621296400 has 45 divisors (see below), whose sum is σ = 472403971893. Its totient is φ = 78644971200.

The previous prime is 196621296383. The next prime is 196621296407. The reversal of 196621296400 is 4692126691.

The square root of 196621296400 is 443420.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 70783666704 + 125837629696 = 266052^2 + 354736^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (196621296407) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 8857315 + ... + 8879485.

Almost surely, 2^196621296400 is an apocalyptic number.

196621296400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

196621296400 is the 443420-th square number.

It is an amenable number.

196621296400 is an abundant number, since it is smaller than the sum of its proper divisors (275782675493).

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

196621296400 is an frugal number, since it uses more digits than its factorization.

196621296400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44360 (or 22178 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 46.

The spelling of 196621296400 in words is "one hundred ninety-six billion, six hundred twenty-one million, two hundred ninety-six thousand, four hundred".