47404640 has 24 divisors (see below), whose sum is σ = 111993840. Its totient is φ = 18961792.

The previous prime is 47404627. The next prime is 47404649. The reversal of 47404640 is 4640474.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47404649) 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, 147980 + ... + 148299.

It is an arithmetic number, because the mean of its divisors is an integer number (4666410).

Almost surely, 2^47404640 is an apocalyptic number.

47404640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

47404640 is an abundant number, since it is smaller than the sum of its proper divisors (64589200).

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

47404640 is a wasteful number, since it uses less digits than its factorization.

47404640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296294 (or 296286 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 29.

The square root of 47404640 is about 6885.1027588555. The cubic root of 47404640 is about 361.9153063366.

The spelling of 47404640 in words is "forty-seven million, four hundred four thousand, six hundred forty".