57434220 has 72 divisors (see below), whose sum is σ = 181804896. Its totient is φ = 14648832.

The previous prime is 57434219. The next prime is 57434233. The reversal of 57434220 is 2243475.

57434220 is a `hidden beast` number, since 5 + 7 + 434 + 220 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2797 + ... + 11076.

It is an arithmetic number, because the mean of its divisors is an integer number (2525068).

Almost surely, 2^57434220 is an apocalyptic number.

It is an amenable number.

57434220 is an abundant number, since it is smaller than the sum of its proper divisors (124370676).

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

57434220 is a wasteful number, since it uses less digits than its factorization.

57434220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13911 (or 13906 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 27.

The square root of 57434220 is about 7578.5367980897. The cubic root of 57434220 is about 385.8248912667.

Adding to 57434220 its reverse (2243475), we get a palindrome (59677695).

The spelling of 57434220 in words is "fifty-seven million, four hundred thirty-four thousand, two hundred twenty".