195540420 has 48 divisors (see below), whose sum is σ = 548589888. Its totient is φ = 52041600.

The previous prime is 195540413. The next prime is 195540421. The reversal of 195540420 is 24045591.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (195540421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30495 + ... + 36345.

It is an arithmetic number, because the mean of its divisors is an integer number (11428956).

Almost surely, 2^195540420 is an apocalyptic number.

195540420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

195540420 is an abundant number, since it is smaller than the sum of its proper divisors (353049468).

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

195540420 is a wasteful number, since it uses less digits than its factorization.

195540420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6420 (or 6418 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 195540420 is about 13983.5767956557. The cubic root of 195540420 is about 580.4242041341.

The spelling of 195540420 in words is "one hundred ninety-five million, five hundred forty thousand, four hundred twenty".