2897048778 has 64 divisors (see below), whose sum is σ = 6705659520. Its totient is φ = 826417152.

The previous prime is 2897048767. The next prime is 2897048813. The reversal of 2897048778 is 8778407982.

It is a happy number.

It is a super-2 number, since 2×2897048778² = 16785783244222586568, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 72538 + ... + 105146.

It is an arithmetic number, because the mean of its divisors is an integer number (104775930).

Almost surely, 2^2897048778 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2897048778, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3352829760).

2897048778 is an abundant number, since it is smaller than the sum of its proper divisors (3808610742).

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

2897048778 is a wasteful number, since it uses less digits than its factorization.

2897048778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32711.

The product of its (nonzero) digits is 12644352, while the sum is 60.

The square root of 2897048778 is about 53824.2396880811. The cubic root of 2897048778 is about 1425.5592392859.

The spelling of 2897048778 in words is "two billion, eight hundred ninety-seven million, forty-eight thousand, seven hundred seventy-eight".