47780736 has 32 divisors (see below), whose sum is σ = 126918600. Its totient is φ = 15926784.

The previous prime is 47780731. The next prime is 47780741. The reversal of 47780736 is 63708774.

It is an interprime number because it is at equal distance from previous prime (47780731) and next prime (47780741).

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47780731) 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, 61831 + ... + 62598.

Almost surely, 2^47780736 is an apocalyptic number.

It is an amenable number.

47780736 is an abundant number, since it is smaller than the sum of its proper divisors (79137864).

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

47780736 is a wasteful number, since it uses less digits than its factorization.

47780736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124446 (or 124434 counting only the distinct ones).

The product of its (nonzero) digits is 197568, while the sum is 42.

The square root of 47780736 is about 6912.3611016786. The cubic root of 47780736 is about 362.8699000265.

It can be divided in two parts, 47780 and 736, that added together give a triangular number (48516 = T₃₁₁).

The spelling of 47780736 in words is "forty-seven million, seven hundred eighty thousand, seven hundred thirty-six".