57072478 has 8 divisors (see below), whose sum is σ = 85856472. Its totient is φ = 28453656.

The previous prime is 57072469. The next prime is 57072479. The reversal of 57072478 is 87427075.

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

It is a self number, because there is not a number n which added to its sum of digits gives 57072478.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57072479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40425 + ... + 41812.

It is an arithmetic number, because the mean of its divisors is an integer number (10732059).

Almost surely, 2^57072478 is an apocalyptic number.

57072478 is a deficient number, since it is larger than the sum of its proper divisors (28783994).

57072478 is a wasteful number, since it uses less digits than its factorization.

57072478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82586.

The product of its (nonzero) digits is 109760, while the sum is 40.

The square root of 57072478 is about 7554.6328832048. The cubic root of 57072478 is about 385.0131619720.

The spelling of 57072478 in words is "fifty-seven million, seventy-two thousand, four hundred seventy-eight".