195720434 has 64 divisors (see below), whose sum is σ = 375217920. Its totient is φ = 74511360.

The previous prime is 195720433. The next prime is 195720443. The reversal of 195720434 is 434027591.

It is a junction number, because it is equal to n+sod(n) for n = 195720394 and 195720403.

It is not an unprimeable number, because it can be changed into a prime (195720431) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 696374 + ... + 696654.

It is an arithmetic number, because the mean of its divisors is an integer number (5862780).

Almost surely, 2^195720434 is an apocalyptic number.

195720434 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

195720434 is a deficient number, since it is larger than the sum of its proper divisors (179497486).

195720434 is a wasteful number, since it uses less digits than its factorization.

195720434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 435.

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 195720434 is about 13990.0119370928. The cubic root of 195720434 is about 580.6022618410.

The spelling of 195720434 in words is "one hundred ninety-five million, seven hundred twenty thousand, four hundred thirty-four".