196421810 has 64 divisors (see below), whose sum is σ = 403643520. Its totient is φ = 68221440.

The previous prime is 196421803. The next prime is 196421831. The reversal of 196421810 is 18124691.

196421810 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 2×196421810² = 77163054887352200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 693929 + ... + 694211.

It is an arithmetic number, because the mean of its divisors is an integer number (6306930).

Almost surely, 2^196421810 is an apocalyptic number.

196421810 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

196421810 is an abundant number, since it is smaller than the sum of its proper divisors (207221710).

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

196421810 is a wasteful number, since it uses less digits than its factorization.

196421810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 603.

The product of its (nonzero) digits is 3456, while the sum is 32.

The square root of 196421810 is about 14015.0565464432. The cubic root of 196421810 is about 581.2949761320.

The spelling of 196421810 in words is "one hundred ninety-six million, four hundred twenty-one thousand, eight hundred ten".