47421782 has 4 divisors (see below), whose sum is σ = 71132676. Its totient is φ = 23710890.

The previous prime is 47421779. The next prime is 47421799. The reversal of 47421782 is 28712474.

It is a happy number.

It is a semiprime because it is the product of two primes.

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, 11855444 + ... + 11855447.

It is an arithmetic number, because the mean of its divisors is an integer number (17783169).

Almost surely, 2^47421782 is an apocalyptic number.

47421782 is a deficient number, since it is larger than the sum of its proper divisors (23710894).

47421782 is a wasteful number, since it uses less digits than its factorization.

47421782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23710893.

The product of its digits is 25088, while the sum is 35.

The square root of 47421782 is about 6886.3475079319. The cubic root of 47421782 is about 361.9589251647.

The spelling of 47421782 in words is "forty-seven million, four hundred twenty-one thousand, seven hundred eighty-two".