2897921160 has 96 divisors (see below), whose sum is σ = 9501724440. Its totient is φ = 765929472.

The previous prime is 2897921153. The next prime is 2897921177. The reversal of 2897921160 is 611297982.

It can be written as a sum of positive squares in 4 ways, for example, as 672157476 + 2225763684 = 25926^2 + 47178^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5062 + ... + 76298.

Almost surely, 2^2897921160 is an apocalyptic number.

2897921160 is a gapful number since it is divisible by the number (20) 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 2897921160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4750862220).

2897921160 is an abundant number, since it is smaller than the sum of its proper divisors (6603803280).

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

2897921160 is a wasteful number, since it uses less digits than its factorization.

2897921160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71367 (or 71360 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 45.

The square root of 2897921160 is about 53832.3430662274. The cubic root of 2897921160 is about 1425.7023167768.

The spelling of 2897921160 in words is "two billion, eight hundred ninety-seven million, nine hundred twenty-one thousand, one hundred sixty".