196405972 has 24 divisors (see below), whose sum is σ = 394540160. Its totient is φ = 83803680.

The previous prime is 196405943. The next prime is 196405973. The reversal of 196405972 is 279504691.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (196405973) 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, 8904 + ... + 21727.

Almost surely, 2^196405972 is an apocalyptic number.

It is an amenable number.

196405972 is an abundant number, since it is smaller than the sum of its proper divisors (198134188).

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

196405972 is a wasteful number, since it uses less digits than its factorization.

196405972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30871 (or 30869 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 43.

The square root of 196405972 is about 14014.4914998726. The cubic root of 196405972 is about 581.2793519382.

The spelling of 196405972 in words is "one hundred ninety-six million, four hundred five thousand, nine hundred seventy-two".