47706918 has 16 divisors (see below), whose sum is σ = 109044480. Its totient is φ = 13630536.

The previous prime is 47706917. The next prime is 47706973. The reversal of 47706918 is 81960774.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 1135879 = 47706918 / (4 + 7 + 7 + 0 + 6 + 9 + 1 + 8).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 47706918.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47706917) 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, 567898 + ... + 567981.

It is an arithmetic number, because the mean of its divisors is an integer number (6815280).

Almost surely, 2^47706918 is an apocalyptic number.

47706918 is an abundant number, since it is smaller than the sum of its proper divisors (61337562).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

47706918 is a wasteful number, since it uses less digits than its factorization.

47706918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1135891.

The product of its (nonzero) digits is 84672, while the sum is 42.

The square root of 47706918 is about 6907.0194729710. The cubic root of 47706918 is about 362.6829339063.

The spelling of 47706918 in words is "forty-seven million, seven hundred six thousand, nine hundred eighteen".