57113940 has 96 divisors (see below), whose sum is σ = 176964480. Its totient is φ = 13671936.

The previous prime is 57113939. The next prime is 57113941. The reversal of 57113940 is 4931175.

57113940 = T₁₈₄ + T₁₈₅ + ... + T₇₀₃.

It is an interprime number because it is at equal distance from previous prime (57113939) and next prime (57113941).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a nialpdrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 57113898 and 57113907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57113941) 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, 27871 + ... + 29849.

It is an arithmetic number, because the mean of its divisors is an integer number (1843380).

Almost surely, 2^57113940 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 57113940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88482240).

57113940 is an abundant number, since it is smaller than the sum of its proper divisors (119850540).

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

57113940 is a wasteful number, since it uses less digits than its factorization.

57113940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2041 (or 2039 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 30.

The square root of 57113940 is about 7557.3765289285. The cubic root of 57113940 is about 385.1063741596.

The spelling of 57113940 in words is "fifty-seven million, one hundred thirteen thousand, nine hundred forty".