57273678 has 144 divisors (see below), whose sum is σ = 163582848. Its totient is φ = 14061600.

The previous prime is 57273617. The next prime is 57273691. The reversal of 57273678 is 87637275.

57273678 is a `hidden beast` number, since 572 + 7 + 3 + 6 + 78 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1331925 + ... + 1331967.

It is an arithmetic number, because the mean of its divisors is an integer number (1135992).

Almost surely, 2^57273678 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57273678, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81791424).

57273678 is an abundant number, since it is smaller than the sum of its proper divisors (106309170).

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

57273678 is a wasteful number, since it uses less digits than its factorization.

57273678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131 (or 97 counting only the distinct ones).

The product of its digits is 493920, while the sum is 45.

The square root of 57273678 is about 7567.9374997419. The cubic root of 57273678 is about 385.4650656973.

The spelling of 57273678 in words is "fifty-seven million, two hundred seventy-three thousand, six hundred seventy-eight".