57282444 has 24 divisors (see below), whose sum is σ = 148510320. Its totient is φ = 19094112.

The previous prime is 57282431. The next prime is 57282457. The reversal of 57282444 is 44428275.

57282444 is a `hidden beast` number, since 572 + 82 + 4 + 4 + 4 = 666.

57282444 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (57282431) and next prime (57282457).

It is a super-2 number, since 2×57282444² = 6562556781226272, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

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

It is a junction number, because it is equal to n+sod(n) for n = 57282399 and 57282408.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 265089 + ... + 265304.

It is an arithmetic number, because the mean of its divisors is an integer number (6187930).

Almost surely, 2^57282444 is an apocalyptic number.

57282444 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

57282444 is an abundant number, since it is smaller than the sum of its proper divisors (91227876).

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

57282444 is a wasteful number, since it uses less digits than its factorization.

57282444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 530406 (or 530398 counting only the distinct ones).

The product of its digits is 71680, while the sum is 36.

The square root of 57282444 is about 7568.5166314146. The cubic root of 57282444 is about 385.4847304282.

The spelling of 57282444 in words is "fifty-seven million, two hundred eighty-two thousand, four hundred forty-four".