47257778 has 16 divisors (see below), whose sum is σ = 74281536. Its totient is φ = 22506000.

The previous prime is 47257751. The next prime is 47257811. The reversal of 47257778 is 87775274.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9500 + ... + 13592.

It is an arithmetic number, because the mean of its divisors is an integer number (4642596).

Almost surely, 2^47257778 is an apocalyptic number.

47257778 is a deficient number, since it is larger than the sum of its proper divisors (27023758).

47257778 is a wasteful number, since it uses less digits than its factorization.

47257778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4369.

The product of its digits is 768320, while the sum is 47.

The square root of 47257778 is about 6874.4292854025. The cubic root of 47257778 is about 361.5411756665.

The spelling of 47257778 in words is "forty-seven million, two hundred fifty-seven thousand, seven hundred seventy-eight".