47780144 has 10 divisors (see below), whose sum is σ = 92574060. Its totient is φ = 23890064.

The previous prime is 47780143. The next prime is 47780167. The reversal of 47780144 is 44108774.

It is not an unprimeable number, because it can be changed into a prime (47780143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1493114 + ... + 1493145.

It is an arithmetic number, because the mean of its divisors is an integer number (9257406).

Almost surely, 2^47780144 is an apocalyptic number.

It is an amenable number.

47780144 is a deficient number, since it is larger than the sum of its proper divisors (44793916).

47780144 is a wasteful number, since it uses less digits than its factorization.

47780144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2986267 (or 2986261 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 35.

The square root of 47780144 is about 6912.3182797091. The cubic root of 47780144 is about 362.8684013760.

The spelling of 47780144 in words is "forty-seven million, seven hundred eighty thousand, one hundred forty-four".