47278500 has 96 divisors (see below), whose sum is σ = 141068928. Its totient is φ = 12297600.

The previous prime is 47278493. The next prime is 47278507. The reversal of 47278500 is 587274.

It is an interprime number because it is at equal distance from previous prime (47278493) and next prime (47278507).

It is not an unprimeable number, because it can be changed into a prime (47278507) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 64134 + ... + 64866.

It is an arithmetic number, because the mean of its divisors is an integer number (1469468).

Almost surely, 2^47278500 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 47278500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70534464).

47278500 is an abundant number, since it is smaller than the sum of its proper divisors (93790428).

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

47278500 is a wasteful number, since it uses less digits than its factorization.

47278500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 798 (or 786 counting only the distinct ones).

The product of its (nonzero) digits is 15680, while the sum is 33.

The square root of 47278500 is about 6875.9362998795. The cubic root of 47278500 is about 361.5940118471.

The spelling of 47278500 in words is "forty-seven million, two hundred seventy-eight thousand, five hundred".