2897856 has 140 divisors (see below), whose sum is σ = 9466072. Its totient is φ = 870912.

The previous prime is 2897833. The next prime is 2897887. The reversal of 2897856 is 6587982.

Its product of digits (241920) is a multiple of the sum of its prime factors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 67371 + ... + 67413.

2^2897856 is an apocalyptic number.

2897856 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 2897856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4733036).

2897856 is an abundant number, since it is smaller than the sum of its proper divisors (6568216).

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

2897856 is a wasteful number, since it uses less digits than its factorization.

2897856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80 (or 61 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The square root of 2897856 is about 1702.3090201253. The cubic root of 2897856 is about 142.5691631018.

The spelling of 2897856 in words is "two million, eight hundred ninety-seven thousand, eight hundred fifty-six".