47267640 has 96 divisors (see below), whose sum is σ = 175574880. Its totient is φ = 10803456.

The previous prime is 47267617. The next prime is 47267641. The reversal of 47267640 is 4676274.

47267640 is a `hidden beast` number, since 4 + 7 + 2 + 6 + 7 + 640 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 47267595 and 47267604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47267641) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6859 + ... + 11898.

It is an arithmetic number, because the mean of its divisors is an integer number (1828905).

Almost surely, 2^47267640 is an apocalyptic number.

47267640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

47267640 is an abundant number, since it is smaller than the sum of its proper divisors (128307240).

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

47267640 is a wasteful number, since it uses less digits than its factorization.

47267640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18781 (or 18774 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 36.

The square root of 47267640 is about 6875.1465438927. The cubic root of 47267640 is about 361.5663233510.

The spelling of 47267640 in words is "forty-seven million, two hundred sixty-seven thousand, six hundred forty".