57071740 has 48 divisors (see below), whose sum is σ = 136442880. Its totient is φ = 19849280.

The previous prime is 57071711. The next prime is 57071741. The reversal of 57071740 is 4717075.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57071741) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 580 + ... + 10699.

It is an arithmetic number, because the mean of its divisors is an integer number (2842560).

Almost surely, 2^57071740 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57071740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68221440).

57071740 is an abundant number, since it is smaller than the sum of its proper divisors (79371140).

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

57071740 is a wasteful number, since it uses less digits than its factorization.

57071740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11322 (or 11320 counting only the distinct ones).

The product of its (nonzero) digits is 6860, while the sum is 31.

The square root of 57071740 is about 7554.5840388469. The cubic root of 57071740 is about 385.0115024393.

It can be divided in two parts, 5707 and 1740, that added together give a palindrome (7447).

The spelling of 57071740 in words is "fifty-seven million, seventy-one thousand, seven hundred forty".