47611978 has 8 divisors (see below), whose sum is σ = 74523168. Its totient is φ = 22770924.

The previous prime is 47611969. The next prime is 47611979. The reversal of 47611978 is 87911674.

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

It is not an unprimeable number, because it can be changed into a prime (47611979) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 517476 + ... + 517567.

It is an arithmetic number, because the mean of its divisors is an integer number (9315396).

Almost surely, 2^47611978 is an apocalyptic number.

47611978 is a deficient number, since it is larger than the sum of its proper divisors (26911190).

47611978 is a wasteful number, since it uses less digits than its factorization.

47611978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1035068.

The product of its digits is 84672, while the sum is 43.

The square root of 47611978 is about 6900.1433318446. The cubic root of 47611978 is about 362.4421862616.

The spelling of 47611978 in words is "forty-seven million, six hundred eleven thousand, nine hundred seventy-eight".