47312438 has 4 divisors (see below), whose sum is σ = 70968660. Its totient is φ = 23656218.

The previous prime is 47312423. The next prime is 47312459. The reversal of 47312438 is 83421374.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 83421374 = 2 ⋅41710687.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11828108 + ... + 11828111.

It is an arithmetic number, because the mean of its divisors is an integer number (17742165).

Almost surely, 2^47312438 is an apocalyptic number.

47312438 is a deficient number, since it is larger than the sum of its proper divisors (23656222).

47312438 is a wasteful number, since it uses less digits than its factorization.

47312438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23656221.

The product of its digits is 16128, while the sum is 32.

The square root of 47312438 is about 6878.4037392407. The cubic root of 47312438 is about 361.6805123522.

The spelling of 47312438 in words is "forty-seven million, three hundred twelve thousand, four hundred thirty-eight".