57891672 has 80 divisors (see below), whose sum is σ = 166181400. Its totient is φ = 18817920.

The previous prime is 57891671. The next prime is 57891677. The reversal of 57891672 is 27619875.

57891672 is a `hidden beast` number, since 578 + 9 + 1 + 6 + 72 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57891671) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 25479 + ... + 27657.

Almost surely, 2^57891672 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57891672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83090700).

57891672 is an abundant number, since it is smaller than the sum of its proper divisors (108289728).

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

57891672 is a wasteful number, since it uses less digits than its factorization.

57891672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2238 (or 2225 counting only the distinct ones).

The product of its digits is 211680, while the sum is 45.

The square root of 57891672 is about 7608.6577002780. The cubic root of 57891672 is about 386.8465228808.

The spelling of 57891672 in words is "fifty-seven million, eight hundred ninety-one thousand, six hundred seventy-two".