57207040 has 144 divisors (see below), whose sum is σ = 158941440. Its totient is φ = 19496960.

The previous prime is 57207001. The next prime is 57207047. The reversal of 57207040 is 4070275.

It is a junction number, because it is equal to n+sod(n) for n = 57206996 and 57207014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57207047) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 239241 + ... + 239479.

It is an arithmetic number, because the mean of its divisors is an integer number (1103760).

Almost surely, 2^57207040 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 57207040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79470720).

57207040 is an abundant number, since it is smaller than the sum of its proper divisors (101734400).

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

57207040 is a wasteful number, since it uses less digits than its factorization.

57207040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288 (or 274 counting only the distinct ones).

The product of its (nonzero) digits is 1960, while the sum is 25.

The square root of 57207040 is about 7563.5335657350. The cubic root of 57207040 is about 385.3155113091.

The spelling of 57207040 in words is "fifty-seven million, two hundred seven thousand, forty".