2851220736 has 360 divisors, whose sum is σ = 10470708864. Its totient is φ = 751472640.

The previous prime is 2851220677. The next prime is 2851220741. The reversal of 2851220736 is 6370221582.

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

It is a self number, because there is not a number n which added to its sum of digits gives 2851220736.

It is a congruent number.

It is an unprimeable number.

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 39 ways as a sum of consecutive naturals, for example, 1886221 + ... + 1887731.

Almost surely, 2^2851220736 is an apocalyptic number.

2851220736 is a gapful number since it is divisible by the number (26) 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 2851220736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5235354432).

2851220736 is an abundant number, since it is smaller than the sum of its proper divisors (7619488128).

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

2851220736 is a wasteful number, since it uses less digits than its factorization.

2851220736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1559 (or 1536 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 2851220736 is about 53396.8232762961. The cubic root of 2851220736 is about 1418.0023381258.

The spelling of 2851220736 in words is "two billion, eight hundred fifty-one million, two hundred twenty thousand, seven hundred thirty-six".