47294640 has 60 divisors (see below), whose sum is σ = 158833584. Its totient is φ = 12611712.

The previous prime is 47294617. The next prime is 47294641. The reversal of 47294640 is 4649274.

47294640 is a `hidden beast` number, since 4 + 7 + 2 + 9 + 4 + 640 = 666.

It is a tau number, because it is divible by the number of its divisors (60).

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 = 47294595 and 47294604.

It is not an unprimeable number, because it can be changed into a prime (47294641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32124 + ... + 33563.

Almost surely, 2^47294640 is an apocalyptic number.

47294640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

47294640 is an abundant number, since it is smaller than the sum of its proper divisors (111538944).

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

47294640 is a wasteful number, since it uses less digits than its factorization.

47294640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65706 (or 65697 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 47294640 is about 6877.1098580726. The cubic root of 47294640 is about 361.6351543210.

The spelling of 47294640 in words is "forty-seven million, two hundred ninety-four thousand, six hundred forty".