2897280 has 96 divisors (see below), whose sum is σ = 10024560. Its totient is φ = 771072.

The previous prime is 2897273. The next prime is 2897299. The reversal of 2897280 is 827982.

It is a tau number, because it is divible by the number of its divisors (96).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5509 + ... + 6011.

2^2897280 is an apocalyptic number.

2897280 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 2897280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5012280).

2897280 is an abundant number, since it is smaller than the sum of its proper divisors (7127280).

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

2897280 is a wasteful number, since it uses less digits than its factorization.

2897280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 528 (or 513 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 2897280 is about 1702.1398297437. The cubic root of 2897280 is about 142.5597164305.

It can be divided in two parts, 289 and 7280, that added together give a square (7569 = 87²).

The spelling of 2897280 in words is "two million, eight hundred ninety-seven thousand, two hundred eighty".