195064428 has 24 divisors (see below), whose sum is σ = 490162288. Its totient is φ = 60019776.

The previous prime is 195064427. The next prime is 195064459. The reversal of 195064428 is 824460591.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (195064421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 625051 + ... + 625362.

Almost surely, 2^195064428 is an apocalyptic number.

It is an amenable number.

195064428 is an abundant number, since it is smaller than the sum of its proper divisors (295097860).

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

195064428 is a wasteful number, since it uses less digits than its factorization.

195064428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1250433 (or 1250431 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 39.

The square root of 195064428 is about 13966.5467457063. The cubic root of 195064428 is about 579.9528578410.

The spelling of 195064428 in words is "one hundred ninety-five million, sixty-four thousand, four hundred twenty-eight".