3195420840 has 192 divisors, whose sum is σ = 10807392960. Its totient is φ = 849139200.

The previous prime is 3195420829. The next prime is 3195420841. The reversal of 3195420840 is 480245913.

3195420840 is a `hidden beast` number, since 3 + 195 + 420 + 8 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 3195420795 and 3195420804.

It is not an unprimeable number, because it can be changed into a prime (3195420841) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5316540 + ... + 5317140.

It is an arithmetic number, because the mean of its divisors is an integer number (56288505).

Almost surely, 2^3195420840 is an apocalyptic number.

3195420840 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3195420840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5403696480).

3195420840 is an abundant number, since it is smaller than the sum of its proper divisors (7611972120).

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

3195420840 is a wasteful number, since it uses less digits than its factorization.

3195420840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1174 (or 1158 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 3195420840 is about 56528.0535663488. The cubic root of 3195420840 is about 1472.9093568357.

The spelling of 3195420840 in words is "three billion, one hundred ninety-five million, four hundred twenty thousand, eight hundred forty".