57831480 has 192 divisors, whose sum is σ = 219360960. Its totient is φ = 12939264.

The previous prime is 57831469. The next prime is 57831509. The reversal of 57831480 is 8413875.

57831480 is a `hidden beast` number, since 578 + 3 + 1 + 4 + 80 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 133344 + ... + 133776.

It is an arithmetic number, because the mean of its divisors is an integer number (1142505).

Almost surely, 2^57831480 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57831480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109680480).

57831480 is an abundant number, since it is smaller than the sum of its proper divisors (161529480).

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

57831480 is a wasteful number, since it uses less digits than its factorization.

57831480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510 (or 503 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 57831480 is about 7604.7011775612. The cubic root of 57831480 is about 386.7124037587.

It can be divided in two parts, 57831 and 480, that added together give a triangular number (58311 = T₃₄₁).

The spelling of 57831480 in words is "fifty-seven million, eight hundred thirty-one thousand, four hundred eighty".