57392240 has 40 divisors (see below), whose sum is σ = 134777088. Its totient is φ = 22726400.

The previous prime is 57392227. The next prime is 57392263. The reversal of 57392240 is 4229375.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 57392197 and 57392206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4529 + ... + 11631.

Almost surely, 2^57392240 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 57392240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67388544).

57392240 is an abundant number, since it is smaller than the sum of its proper divisors (77384848).

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

57392240 is a wasteful number, since it uses less digits than its factorization.

57392240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7217 (or 7211 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 57392240 is about 7575.7666278734. The cubic root of 57392240 is about 385.7308655751.

The spelling of 57392240 in words is "fifty-seven million, three hundred ninety-two thousand, two hundred forty".