47438415 has 24 divisors (see below), whose sum is σ = 87064848. Its totient is φ = 23811840.

The previous prime is 47438411. The next prime is 47438423. The reversal of 47438415 is 51483474.

It is not a de Polignac number, because 47438415 - 2² = 47438411 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 47438415.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47438411) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30241 + ... + 31770.

It is an arithmetic number, because the mean of its divisors is an integer number (3627702).

Almost surely, 2^47438415 is an apocalyptic number.

47438415 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

47438415 is a deficient number, since it is larger than the sum of its proper divisors (39626433).

47438415 is a wasteful number, since it uses less digits than its factorization.

47438415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62039 (or 62036 counting only the distinct ones).

The product of its digits is 53760, while the sum is 36.

The square root of 47438415 is about 6887.5550814494. Note that the first 3 decimals coincide. The cubic root of 47438415 is about 362.0012387654.

The spelling of 47438415 in words is "forty-seven million, four hundred thirty-eight thousand, four hundred fifteen".