47687278 has 8 divisors (see below), whose sum is σ = 75738672. Its totient is φ = 22441056.

The previous prime is 47687273. The next prime is 47687279. The reversal of 47687278 is 87278674.

It is a happy number.

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

It is a super-3 number, since 3×47687278³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47687273) 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, 701250 + ... + 701317.

It is an arithmetic number, because the mean of its divisors is an integer number (9467334).

Almost surely, 2^47687278 is an apocalyptic number.

47687278 is a deficient number, since it is larger than the sum of its proper divisors (28051394).

47687278 is a wasteful number, since it uses less digits than its factorization.

47687278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1402586.

The product of its digits is 1053696, while the sum is 49.

The square root of 47687278 is about 6905.5975845686. The cubic root of 47687278 is about 362.6331572644.

The spelling of 47687278 in words is "forty-seven million, six hundred eighty-seven thousand, two hundred seventy-eight".