47001638 has 8 divisors (see below), whose sum is σ = 70569360. Its totient is φ = 23478520.

The previous prime is 47001631. The next prime is 47001653. The reversal of 47001638 is 83610074.

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

It is a self number, because there is not a number n which added to its sum of digits gives 47001638.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47001631) 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, 8378 + ... + 12813.

It is an arithmetic number, because the mean of its divisors is an integer number (8821170).

Almost surely, 2^47001638 is an apocalyptic number.

47001638 is a deficient number, since it is larger than the sum of its proper divisors (23567722).

47001638 is a wasteful number, since it uses less digits than its factorization.

47001638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22302.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 47001638 is about 6855.7740627882. The cubic root of 47001638 is about 360.8868003461.

The spelling of 47001638 in words is "forty-seven million, one thousand, six hundred thirty-eight".