47840538 has 8 divisors (see below), whose sum is σ = 95681088. Its totient is φ = 15946844.

The previous prime is 47840521. The next prime is 47840549. The reversal of 47840538 is 83504874.

It is a sphenic number, since it is the product of 3 distinct primes.

47840538 is an admirable number.

It is a super-2 number, since 2×47840538² = 4577434152258888, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 47840496 and 47840505.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3986706 + ... + 3986717.

It is an arithmetic number, because the mean of its divisors is an integer number (11960136).

Almost surely, 2^47840538 is an apocalyptic number.

47840538 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

47840538 is a wasteful number, since it uses less digits than its factorization.

47840538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7973428.

The product of its (nonzero) digits is 107520, while the sum is 39.

The square root of 47840538 is about 6916.6854778861. The cubic root of 47840538 is about 363.0212252993.

The spelling of 47840538 in words is "forty-seven million, eight hundred forty thousand, five hundred thirty-eight".