47620838 has 4 divisors (see below), whose sum is σ = 71431260. Its totient is φ = 23810418.

The previous prime is 47620831. The next prime is 47620849. The reversal of 47620838 is 83802674.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 83802674 = 2 ⋅41901337.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47620831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11905208 + ... + 11905211.

It is an arithmetic number, because the mean of its divisors is an integer number (17857815).

Almost surely, 2^47620838 is an apocalyptic number.

47620838 is a deficient number, since it is larger than the sum of its proper divisors (23810422).

47620838 is a wasteful number, since it uses less digits than its factorization.

47620838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23810421.

The product of its (nonzero) digits is 64512, while the sum is 38.

The square root of 47620838 is about 6900.7853176287. The cubic root of 47620838 is about 362.4646668693.

The spelling of 47620838 in words is "forty-seven million, six hundred twenty thousand, eight hundred thirty-eight".