2957820 has 24 divisors (see below), whose sum is σ = 8282064. Its totient is φ = 788736.

The previous prime is 2957819. The next prime is 2957827. The reversal of 2957820 is 287592.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2957827) 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, 24589 + ... + 24708.

It is an arithmetic number, because the mean of its divisors is an integer number (345086).

2^2957820 is an apocalyptic number.

2957820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2957820 is an abundant number, since it is smaller than the sum of its proper divisors (5324244).

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

2957820 is a wasteful number, since it uses less digits than its factorization.

2957820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49309 (or 49307 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 2957820 is about 1719.8313870842. The cubic root of 2957820 is about 143.5458298744.

The spelling of 2957820 in words is "two million, nine hundred fifty-seven thousand, eight hundred twenty".