47978770 has 32 divisors (see below), whose sum is σ = 99439488. Its totient is φ = 16326528.

The previous prime is 47978761. The next prime is 47978773. The reversal of 47978770 is 7787974.

It is not an unprimeable number, because it can be changed into a prime (47978773) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 7089 + ... + 12091.

It is an arithmetic number, because the mean of its divisors is an integer number (3107484).

Almost surely, 2^47978770 is an apocalyptic number.

47978770 is an abundant number, since it is smaller than the sum of its proper divisors (51460718).

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

47978770 is a wasteful number, since it uses less digits than its factorization.

47978770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5154.

The product of its (nonzero) digits is 691488, while the sum is 49.

The square root of 47978770 is about 6926.6709175476. The cubic root of 47978770 is about 363.3705308455.

The spelling of 47978770 in words is "forty-seven million, nine hundred seventy-eight thousand, seven hundred seventy".