3146281920 has 336 divisors, whose sum is σ = 11521866720. Its totient is φ = 808206336.

The previous prime is 3146281883. The next prime is 3146281927. The reversal of 3146281920 is 291826413.

3146281920 is a `hidden beast` number, since 3 + 1 + 4 + 628 + 1 + 9 + 20 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3146281927) 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, 7266024 + ... + 7266456.

It is an arithmetic number, because the mean of its divisors is an integer number (34291270).

Almost surely, 2^3146281920 is an apocalyptic number.

3146281920 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 3146281920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5760933360).

3146281920 is an abundant number, since it is smaller than the sum of its proper divisors (8375584800).

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

3146281920 is a wasteful number, since it uses less digits than its factorization.

3146281920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 517 (or 472 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 3146281920 is about 56091.7277323493. The cubic root of 3146281920 is about 1465.3202280403.

The spelling of 3146281920 in words is "three billion, one hundred forty-six million, two hundred eighty-one thousand, nine hundred twenty".