57784290 has 32 divisors (see below), whose sum is σ = 139043520. Its totient is φ = 15369024.

The previous prime is 57784289. The next prime is 57784297. The reversal of 57784290 is 9248775.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (57784297) 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, 10272 + ... + 14868.

It is an arithmetic number, because the mean of its divisors is an integer number (4345110).

Almost surely, 2^57784290 is an apocalyptic number.

57784290 is an abundant number, since it is smaller than the sum of its proper divisors (81259230).

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

57784290 is a wasteful number, since it uses less digits than its factorization.

57784290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5026.

The product of its (nonzero) digits is 141120, while the sum is 42.

The square root of 57784290 is about 7601.5978583453. The cubic root of 57784290 is about 386.6071904490.

The spelling of 57784290 in words is "fifty-seven million, seven hundred eighty-four thousand, two hundred ninety".