57016720 has 40 divisors (see below), whose sum is σ = 139544640. Its totient is φ = 21605760.

The previous prime is 57016717. The next prime is 57016721. The reversal of 57016720 is 2761075.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (57016721) 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, 17236 + ... + 20275.

It is an arithmetic number, because the mean of its divisors is an integer number (3488616).

Almost surely, 2^57016720 is an apocalyptic number.

It is an amenable number.

57016720 is an abundant number, since it is smaller than the sum of its proper divisors (82527920).

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

57016720 is a wasteful number, since it uses less digits than its factorization.

57016720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37543 (or 37537 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 28.

The square root of 57016720 is about 7550.9416631305. The cubic root of 57016720 is about 384.8877392378.

Adding to 57016720 its reverse (2761075), we get a palindrome (59777795).

It can be divided in two parts, 5701 and 6720, that added together give a palindrome (12421).

The spelling of 57016720 in words is "fifty-seven million, sixteen thousand, seven hundred twenty".