47820357 has 24 divisors (see below), whose sum is σ = 75066264. Its totient is φ = 29159424.

The previous prime is 47820347. The next prime is 47820373. The reversal of 47820357 is 75302874.

It can be written as a sum of positive squares in 4 ways, for example, as 10439361 + 37380996 = 3231^2 + 6114^2 .

It is not a de Polignac number, because 47820357 - 2⁷ = 47820229 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47820307) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11413 + ... + 15029.

It is an arithmetic number, because the mean of its divisors is an integer number (3127761).

Almost surely, 2^47820357 is an apocalyptic number.

It is an amenable number.

47820357 is a deficient number, since it is larger than the sum of its proper divisors (27245907).

47820357 is a wasteful number, since it uses less digits than its factorization.

47820357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3749 (or 3746 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 36.

The square root of 47820357 is about 6915.2264605000. The cubic root of 47820357 is about 362.9701726283.

The spelling of 47820357 in words is "forty-seven million, eight hundred twenty thousand, three hundred fifty-seven".