2057240 has 16 divisors (see below), whose sum is σ = 4628880. Its totient is φ = 822880.

The previous prime is 2057233. The next prime is 2057291. The reversal of 2057240 is 427502.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25676 + ... + 25755.

It is an arithmetic number, because the mean of its divisors is an integer number (289305).

2^2057240 is an apocalyptic number.

2057240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2057240 is an abundant number, since it is smaller than the sum of its proper divisors (2571640).

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

2057240 is a wasteful number, since it uses less digits than its factorization.

2057240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51442 (or 51438 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 20.

The square root of 2057240 is about 1434.3081956121. The cubic root of 2057240 is about 127.1827818420.

The spelling of 2057240 in words is "two million, fifty-seven thousand, two hundred forty".