57720134 has 8 divisors (see below), whose sum is σ = 91673208. Its totient is φ = 27162400.

The previous prime is 57720101. The next prime is 57720163. The reversal of 57720134 is 43102775.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×57720134² = 6663227737955912, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 57720097 and 57720106.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 848792 + ... + 848859.

It is an arithmetic number, because the mean of its divisors is an integer number (11459151).

Almost surely, 2^57720134 is an apocalyptic number.

57720134 is a deficient number, since it is larger than the sum of its proper divisors (33953074).

57720134 is a wasteful number, since it uses less digits than its factorization.

57720134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1697670.

The product of its (nonzero) digits is 5880, while the sum is 29.

The square root of 57720134 is about 7597.3767841275. The cubic root of 57720134 is about 386.4640583742.

The spelling of 57720134 in words is "fifty-seven million, seven hundred twenty thousand, one hundred thirty-four".