57278742 has 8 divisors (see below), whose sum is σ = 114557496. Its totient is φ = 19092912.

The previous prime is 57278719. The next prime is 57278761. The reversal of 57278742 is 24787275.

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

57278742 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 57278694 and 57278703.

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, 4773223 + ... + 4773234.

It is an arithmetic number, because the mean of its divisors is an integer number (14319687).

Almost surely, 2^57278742 is an apocalyptic number.

57278742 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

57278742 is a wasteful number, since it uses less digits than its factorization.

57278742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9546462.

The product of its digits is 219520, while the sum is 42.

The square root of 57278742 is about 7568.2720617060. The cubic root of 57278742 is about 385.4764259919.

The spelling of 57278742 in words is "fifty-seven million, two hundred seventy-eight thousand, seven hundred forty-two".