47766840 has 64 divisors (see below), whose sum is σ = 156332160. Its totient is φ = 11579520.

The previous prime is 47766827. The next prime is 47766847. The reversal of 47766840 is 4866774.

It is a junction number, because it is equal to n+sod(n) for n = 47766792 and 47766801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47766847) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16774 + ... + 19413.

It is an arithmetic number, because the mean of its divisors is an integer number (2442690).

Almost surely, 2^47766840 is an apocalyptic number.

47766840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

47766840 is an abundant number, since it is smaller than the sum of its proper divisors (108565320).

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

47766840 is a wasteful number, since it uses less digits than its factorization.

47766840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36212 (or 36208 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 42.

The square root of 47766840 is about 6911.3558727648. The cubic root of 47766840 is about 362.8347189790.

The spelling of 47766840 in words is "forty-seven million, seven hundred sixty-six thousand, eight hundred forty".