57012630 has 64 divisors (see below), whose sum is σ = 145566720. Its totient is φ = 14258816.

The previous prime is 57012601. The next prime is 57012707. The reversal of 57012630 is 3621075.

It is a self number, because there is not a number n which added to its sum of digits gives 57012630.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35791 + ... + 37349.

It is an arithmetic number, because the mean of its divisors is an integer number (2274480).

Almost surely, 2^57012630 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57012630, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72783360).

57012630 is an abundant number, since it is smaller than the sum of its proper divisors (88554090).

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

57012630 is a wasteful number, since it uses less digits than its factorization.

57012630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1645.

The product of its (nonzero) digits is 1260, while the sum is 24.

The square root of 57012630 is about 7550.6708311249. The cubic root of 57012630 is about 384.8785359228.

The spelling of 57012630 in words is "fifty-seven million, twelve thousand, six hundred thirty".