47780670 has 96 divisors (see below), whose sum is σ = 135203328. Its totient is φ = 10585152.

The previous prime is 47780647. The next prime is 47780671. The reversal of 47780670 is 7608774.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47780671) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 463839 + ... + 463941.

It is an arithmetic number, because the mean of its divisors is an integer number (1408368).

Almost surely, 2^47780670 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 47780670, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67601664).

47780670 is an abundant number, since it is smaller than the sum of its proper divisors (87422658).

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

47780670 is a wasteful number, since it uses less digits than its factorization.

47780670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214 (or 167 counting only the distinct ones).

The product of its (nonzero) digits is 65856, while the sum is 39.

The square root of 47780670 is about 6912.3563276208. The cubic root of 47780670 is about 362.8697329479.

The spelling of 47780670 in words is "forty-seven million, seven hundred eighty thousand, six hundred seventy".