57273420 has 96 divisors (see below), whose sum is σ = 166763520. Its totient is φ = 14676480.

The previous prime is 57273413. The next prime is 57273439. The reversal of 57273420 is 2437275.

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

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 203680 + ... + 203960.

It is an arithmetic number, because the mean of its divisors is an integer number (1737120).

Almost surely, 2^57273420 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 57273420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83381760).

57273420 is an abundant number, since it is smaller than the sum of its proper divisors (109490100).

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

57273420 is a wasteful number, since it uses less digits than its factorization.

57273420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415 (or 413 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 30.

The square root of 57273420 is about 7567.9204541274. The cubic root of 57273420 is about 385.4644868966.

The spelling of 57273420 in words is "fifty-seven million, two hundred seventy-three thousand, four hundred twenty".