57206020 has 24 divisors (see below), whose sum is σ = 127200024. Its totient is φ = 21536256.

The previous prime is 57206011. The next prime is 57206047. The reversal of 57206020 is 2060275.

It can be written as a sum of positive squares in 4 ways, for example, as 6625476 + 50580544 = 2574^2 + 7112^2 .

It is a junction number, because it is equal to n+sod(n) for n = 57205982 and 57206000.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83787 + ... + 84466.

It is an arithmetic number, because the mean of its divisors is an integer number (5300001).

Almost surely, 2^57206020 is an apocalyptic number.

It is an amenable number.

57206020 is an abundant number, since it is smaller than the sum of its proper divisors (69994004).

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

57206020 is a wasteful number, since it uses less digits than its factorization.

57206020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168279 (or 168277 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 57206020 is about 7563.4661366334. The cubic root of 57206020 is about 385.3132212404.

Adding to 57206020 its reverse (2060275), we get a palindrome (59266295).

The spelling of 57206020 in words is "fifty-seven million, two hundred six thousand, twenty".