57040434 has 48 divisors (see below), whose sum is σ = 139186944. Its totient is φ = 16725600.

The previous prime is 57040411. The next prime is 57040439. The reversal of 57040434 is 43404075.

It is a super-2 number, since 2×57040434² = 6507222221816712, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 57040398 and 57040407.

It is not an unprimeable number, because it can be changed into a prime (57040439) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1492 + ... + 10784.

It is an arithmetic number, because the mean of its divisors is an integer number (2899728).

Almost surely, 2^57040434 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57040434, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69593472).

57040434 is an abundant number, since it is smaller than the sum of its proper divisors (82146510).

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

57040434 is a wasteful number, since it uses less digits than its factorization.

57040434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9343 (or 9340 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 27.

The square root of 57040434 is about 7552.5117676174. The cubic root of 57040434 is about 384.9410917910.

The spelling of 57040434 in words is "fifty-seven million, forty thousand, four hundred thirty-four".