2897320 has 32 divisors (see below), whose sum is σ = 6586920. Its totient is φ = 1146880.

The previous prime is 2897311. The next prime is 2897341. The reversal of 2897320 is 237982.

2897320 = T₁₅₇ + T₁₅₈ + ... + T₂₇₆.

It can be written as a sum of positive squares in 4 ways, for example, as 2090916 + 806404 = 1446^2 + 898^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4200 + ... + 4840.

2^2897320 is an apocalyptic number.

2897320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2897320 is an abundant number, since it is smaller than the sum of its proper divisors (3689600).

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

2897320 is a wasteful number, since it uses less digits than its factorization.

2897320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 765 (or 761 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 2897320 is about 1702.1515796192. The cubic root of 2897320 is about 142.5603724898.

The spelling of 2897320 in words is "two million, eight hundred ninety-seven thousand, three hundred twenty".