47647642 has 8 divisors (see below), whose sum is σ = 81681696. Its totient is φ = 20420412.

The previous prime is 47647631. The next prime is 47647643. The reversal of 47647642 is 24674674.

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

It is a junction number, because it is equal to n+sod(n) for n = 47647595 and 47647604.

It is not an unprimeable number, because it can be changed into a prime (47647643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1701688 + ... + 1701715.

It is an arithmetic number, because the mean of its divisors is an integer number (10210212).

Almost surely, 2^47647642 is an apocalyptic number.

47647642 is a deficient number, since it is larger than the sum of its proper divisors (34034054).

47647642 is a wasteful number, since it uses less digits than its factorization.

47647642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3403412.

The product of its digits is 225792, while the sum is 40.

The square root of 47647642 is about 6902.7271422243. The cubic root of 47647642 is about 362.5326600776.

The spelling of 47647642 in words is "forty-seven million, six hundred forty-seven thousand, six hundred forty-two".