57280438 has 8 divisors (see below), whose sum is σ = 85982688. Its totient is φ = 28619544.

The previous prime is 57280411. The next prime is 57280441. The reversal of 57280438 is 83408275.

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

It is a junction number, because it is equal to n+sod(n) for n = 57280397 and 57280406.

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, 6606 + ... + 12577.

It is an arithmetic number, because the mean of its divisors is an integer number (10747836).

Almost surely, 2^57280438 is an apocalyptic number.

57280438 is a deficient number, since it is larger than the sum of its proper divisors (28702250).

57280438 is a wasteful number, since it uses less digits than its factorization.

57280438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20678.

The product of its (nonzero) digits is 53760, while the sum is 37.

The square root of 57280438 is about 7568.3841075886. The cubic root of 57280438 is about 385.4802305539.

The spelling of 57280438 in words is "fifty-seven million, two hundred eighty thousand, four hundred thirty-eight".