57620740 has 24 divisors (see below), whose sum is σ = 121164120. Its totient is φ = 23017728.

The previous prime is 57620687. The next prime is 57620741. The reversal of 57620740 is 4702675.

57620740 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 23116864 + 34503876 = 4808^2 + 5874^2 .

It is not an unprimeable number, because it can be changed into a prime (57620741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19266 + ... + 22054.

It is an arithmetic number, because the mean of its divisors is an integer number (5048505).

Almost surely, 2^57620740 is an apocalyptic number.

It is an amenable number.

57620740 is an abundant number, since it is smaller than the sum of its proper divisors (63543380).

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

57620740 is a wasteful number, since it uses less digits than its factorization.

57620740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3831 (or 3829 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 31.

The square root of 57620740 is about 7590.8326289018. The cubic root of 57620740 is about 386.2421007102.

It can be divided in two parts, 576 and 20740, that added together give a square (21316 = 146²).

The spelling of 57620740 in words is "fifty-seven million, six hundred twenty thousand, seven hundred forty".