196421400 has 432 divisors, whose sum is σ = 818686440. Its totient is φ = 41932800.

The previous prime is 196421399. The next prime is 196421441. The reversal of 196421400 is 4124691.

196421400 is a `hidden beast` number, since 1 + 9 + 642 + 14 + 0 + 0 = 666.

196421400 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 1499335 + ... + 1499465.

Almost surely, 2^196421400 is an apocalyptic number.

196421400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 196421400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (409343220).

196421400 is an abundant number, since it is smaller than the sum of its proper divisors (622265040).

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

196421400 is a wasteful number, since it uses less digits than its factorization.

196421400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184 (or 165 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 196421400 is about 14015.0419193094. The cubic root of 196421400 is about 581.2945716774.

The spelling of 196421400 in words is "one hundred ninety-six million, four hundred twenty-one thousand, four hundred".