47257720 has 16 divisors (see below), whose sum is σ = 106329960. Its totient is φ = 18903072.

The previous prime is 47257711. The next prime is 47257723. The reversal of 47257720 is 2775274.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47257723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 590682 + ... + 590761.

Almost surely, 2^47257720 is an apocalyptic number.

47257720 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

47257720 is an abundant number, since it is smaller than the sum of its proper divisors (59072240).

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

47257720 is a wasteful number, since it uses less digits than its factorization.

47257720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1181454 (or 1181450 counting only the distinct ones).

The product of its (nonzero) digits is 27440, while the sum is 34.

The square root of 47257720 is about 6874.4250668692. The cubic root of 47257720 is about 361.5410277586.

The spelling of 47257720 in words is "forty-seven million, two hundred fifty-seven thousand, seven hundred twenty".