57281732 has 12 divisors (see below), whose sum is σ = 105519120. Its totient is φ = 27133416.

The previous prime is 57281723. The next prime is 57281737. The reversal of 57281732 is 23718275.

It is a junction number, because it is equal to n+sod(n) for n = 57281692 and 57281701.

It is not an unprimeable number, because it can be changed into a prime (57281737) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 376778 + ... + 376929.

It is an arithmetic number, because the mean of its divisors is an integer number (8793260).

Almost surely, 2^57281732 is an apocalyptic number.

It is an amenable number.

57281732 is a deficient number, since it is larger than the sum of its proper divisors (48237388).

57281732 is a wasteful number, since it uses less digits than its factorization.

57281732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 753730 (or 753728 counting only the distinct ones).

The product of its digits is 23520, while the sum is 35.

The square root of 57281732 is about 7568.4695943103. The cubic root of 57281732 is about 385.4831332765.

The spelling of 57281732 in words is "fifty-seven million, two hundred eighty-one thousand, seven hundred thirty-two".