47738621 has 32 divisors (see below), whose sum is σ = 60192000. Its totient is φ = 36951552.

The previous prime is 47738617. The next prime is 47738641. The reversal of 47738621 is 12683774.

It is a cyclic number.

It is not a de Polignac number, because 47738621 - 2² = 47738617 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47738641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 437915 + ... + 438023.

It is an arithmetic number, because the mean of its divisors is an integer number (1881000).

Almost surely, 2^47738621 is an apocalyptic number.

It is an amenable number.

47738621 is a deficient number, since it is larger than the sum of its proper divisors (12453379).

47738621 is a wasteful number, since it uses less digits than its factorization.

47738621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261.

The product of its digits is 56448, while the sum is 38.

The square root of 47738621 is about 6909.3140759413. The cubic root of 47738621 is about 362.7632548290.

The spelling of 47738621 in words is "forty-seven million, seven hundred thirty-eight thousand, six hundred twenty-one".