196421715 has 96 divisors (see below), whose sum is σ = 421125120. Its totient is φ = 82674432.

The previous prime is 196421707. The next prime is 196421749. The reversal of 196421715 is 517124691.

196421715 is a `hidden beast` number, since 1 + 9 + 642 + 1 + 7 + 1 + 5 = 666.

196421715 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 196421715 - 2³ = 196421707 is a prime.

Together with 224703405 it forms an amicable pair .

It is a self number, because there is not a number n which added to its sum of digits gives 196421715.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 221002 + ... + 221888.

It is an arithmetic number, because the mean of its divisors is an integer number (4386720).

Almost surely, 2^196421715 is an apocalyptic number.

196421715 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

196421715 is an abundant number, since it is smaller than the sum of its proper divisors (224703405).

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

196421715 is a wasteful number, since it uses less digits than its factorization.

196421715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 961 (or 958 counting only the distinct ones).

The product of its digits is 15120, while the sum is 36.

The square root of 196421715 is about 14015.0531572306. The cubic root of 196421715 is about 581.2948824170.

It can be divided in two parts, 196421 and 715, that added together give a square (197136 = 444²).

The spelling of 196421715 in words is "one hundred ninety-six million, four hundred twenty-one thousand, seven hundred fifteen".