2957320 has 32 divisors (see below), whose sum is σ = 7047000. Its totient is φ = 1113088.

The previous prime is 2957267. The next prime is 2957321. The reversal of 2957320 is 237592.

2957320 = 437² + 438² + ... + 451².

It can be written as a sum of positive squares in 4 ways, for example, as 1920996 + 1036324 = 1386^2 + 1018^2 .

It is an Ulam number.

It is a d-powerful number, because it can be written as 2¹⁵ + 9³ + 5⁵ + 7⁷ + 3 + 2²¹ + 0 .

It is not an unprimeable number, because it can be changed into a prime (2957321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1495 + ... + 2854.

2^2957320 is an apocalyptic number.

2957320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2957320 is an abundant number, since it is smaller than the sum of its proper divisors (4089680).

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

2957320 is a wasteful number, since it uses less digits than its factorization.

2957320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4377 (or 4373 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 28.

The square root of 2957320 is about 1719.6860178533. The cubic root of 2957320 is about 143.5377409260.

The spelling of 2957320 in words is "two million, nine hundred fifty-seven thousand, three hundred twenty".