195831420 has 48 divisors (see below), whose sum is σ = 549037440. Its totient is φ = 52154176.

The previous prime is 195831409. The next prime is 195831431. The reversal of 195831420 is 24138591.

It is an interprime number because it is at equal distance from previous prime (195831409) and next prime (195831431).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59539 + ... + 62741.

It is an arithmetic number, because the mean of its divisors is an integer number (11438280).

Almost surely, 2^195831420 is an apocalyptic number.

195831420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

195831420 is an abundant number, since it is smaller than the sum of its proper divisors (353206020).

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

195831420 is a wasteful number, since it uses less digits than its factorization.

195831420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4234 (or 4232 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 195831420 is about 13993.9779905501. The cubic root of 195831420 is about 580.7119873048.

It can be divided in two parts, 195831 and 420, that added together give a triangular number (196251 = T₆₂₆).

The spelling of 195831420 in words is "one hundred ninety-five million, eight hundred thirty-one thousand, four hundred twenty".