57019380 has 96 divisors (see below), whose sum is σ = 183375360. Its totient is φ = 13092480.

The previous prime is 57019379. The next prime is 57019381. The reversal of 57019380 is 8391075.

It is an interprime number because it is at equal distance from previous prime (57019379) and next prime (57019381).

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57019381) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10267 + ... + 14813.

It is an arithmetic number, because the mean of its divisors is an integer number (1910160).

Almost surely, 2^57019380 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 57019380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91687680).

57019380 is an abundant number, since it is smaller than the sum of its proper divisors (126355980).

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

57019380 is a wasteful number, since it uses less digits than its factorization.

57019380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4589 (or 4587 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 33.

The square root of 57019380 is about 7551.1177980482. The cubic root of 57019380 is about 384.8937245316.

The spelling of 57019380 in words is "fifty-seven million, nineteen thousand, three hundred eighty".