47049178 has 16 divisors (see below), whose sum is σ = 78253920. Its totient is φ = 21034800.

The previous prime is 47049169. The next prime is 47049179. The reversal of 47049178 is 87194074.

It is a self number, because there is not a number n which added to its sum of digits gives 47049178.

It is not an unprimeable number, because it can be changed into a prime (47049179) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16188 + ... + 18871.

It is an arithmetic number, because the mean of its divisors is an integer number (4890870).

Almost surely, 2^47049178 is an apocalyptic number.

47049178 is a deficient number, since it is larger than the sum of its proper divisors (31204742).

47049178 is a wasteful number, since it uses less digits than its factorization.

47049178 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35133.

The product of its (nonzero) digits is 56448, while the sum is 40.

The square root of 47049178 is about 6859.2403369469. The cubic root of 47049178 is about 361.0084328261.

Subtracting 47049178 from its reverse (87194074), we obtain a square (40144896 = 6336²).

The spelling of 47049178 in words is "forty-seven million, forty-nine thousand, one hundred seventy-eight".