47272778 has 8 divisors (see below), whose sum is σ = 81039072. Its totient is φ = 20259756.

The previous prime is 47272739. The next prime is 47272787. The reversal of 47272778 is 87727274.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1688300 + ... + 1688327.

It is an arithmetic number, because the mean of its divisors is an integer number (10129884).

Almost surely, 2^47272778 is an apocalyptic number.

47272778 is a deficient number, since it is larger than the sum of its proper divisors (33766294).

47272778 is a wasteful number, since it uses less digits than its factorization.

47272778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3376636.

The product of its digits is 307328, while the sum is 44.

The square root of 47272778 is about 6875.5201985013. The cubic root of 47272778 is about 361.5794236487.

The spelling of 47272778 in words is "forty-seven million, two hundred seventy-two thousand, seven hundred seventy-eight".